They Mocked His ‘Frankenstein’ Sherman — Until He Destroyed 5 German Tanks With 5 Shots D
On June 14th, 1944, in a village called LJV in Normandy, a sergeant named Wilfried Harris sat in a Sherman tank that looked wrong. The barrel was too long. The turret had a steel box bolted to its back that no American factory had put there. Where a hull gunner should have sat, there were racks of oversized shells.
The breach of the main gun opened sideways, left to right, instead of top to bottom, because no one had found another way to make it fit. Every other Sherman in Normandy carried a 75 mm cannon. Harris’s carried something called the 17 pounder, and the men who had put it inside this turret had been ordered to stop twice.
The village was still smoking. The Durham light infantry had taken LJV that morning in 5 hours of close combat that cost them over 300 men. The soldiers of Panzer, Germany’s elite armored training division, every man and instructor, had held their fire until the British were less than 150 yards away.
Now the Durhams were digging in among rubble and the dead, and Harris’s troop, three standard Shermans, and his one strange machine, had moved up to hold the approaches. Lieutenant Morrison parked near the church. Corporal Johnson took the south road. Harris positioned himself at the east end of the village, facing the road to Tisul.
He opened his Koopa, raised binoculars, and looked east. What he saw coming down that road would turn a tank that Britain’s own government had called impractical, unsound, and unnecessary into the most valued armored weapon in Normandy. But that is getting ahead of the story. If this video helps you see a sight of the war you didn’t know, hit like and subscribe.
It helps these stories find the people who care about them. To understand what Harris did and why it mattered beyond one village, you need to understand the problem that was killing British tank crews in the first week after D-Day. When British armor rolled off the landing craft on June 6th, the crews believed they were ready.
2 years of training. They knew their Shermans. They trusted the 75 mm gun. Reliable, accurate, able to throw a shell 2 miles. What nobody had told them was that the Panther was waiting in the hedge rows. The Panzer Mark 5 weighed 45 tons. Its frontal armor, 80 mm sloped at 55°, gave it the effective resistance of 140 mm of steel.
A Sherman 75 could penetrate about 68 mm at 500 yd. Do that arithmetic. A British crew could charge a Panther headon, firing every round it had, and every shell would bounce off. The Panther’s gun, meanwhile, could kill a Sherman from over a mile. This was not a disadvantage. It was a death sentence. And here is the fact I need you to hold on to.
In June of 1944, the British army possessed exactly one tank-mounted weapon capable of killing a panther from the front. One. And the men who built the tank carrying it had been ordered in writing to stop what they were doing and walk away. The story of how that weapon survived begins not in Normandy, but in the Libyan desert two years earlier with a man who had been blown out of a burning tank and refused to forget what it felt like when your gun could not reach the enemy.
In June of 1942, at a place called Gazala in Libya, Lieutenant Colonel George Witheridge sat inside an M3 Grant tank and watched his shells do nothing. The Grant carried a 75mm gun, the same caliber that would later arm the Sherman. Wither’s crew fired at the German panzers advancing through the dust. The rounds hit. They bounced.
Raml’s tanks kept coming. Then something hit the Grant. Witheridge was blown out of the turret. He survived, broken, burned, but alive. The army declared him unfit for combat duty. They sent him to a desk. But Witheridge remembered. He remembered what it felt like to fire a gun that could not kill the thing trying to kill you.
He remembered the sound, that flat clang of a shell hitting armor and falling away. He would carry that sound for the rest of the war, and it would drive every decision he made next. In January of 1943, the army posted Witheridge to Fort Knox, Kentucky. 6 months advising Americans on gunnery. He arrived expecting to teach. What happened instead was that the Americans taught him something.
He drove their Shermans. He saw what the machine could do. The reliability, the speed, the mechanical simplicity that kept it running when British tanks broke down. Witheridge came back to England sold. Not on the Sherman’s gun. He knew the 75 was already obsolete. But on the Sherman itself, the chassis, the hull, the thing that moved and kept moving. The gun was the problem.
The platform was the answer. All someone had to do was put the right gun on it. Now there was a gun. Britain had the 17 pounder, a 76 mm anti-tank weapon that could punch through 140 mm of steel at a thousand yard. On paper, it was everything the 75 was not. It could kill a Tiger. It could kill a Panther.
It could kill anything the Germans had. But there was a reason it was sitting on the ground behind a towed shield instead of inside a tank. The 17 pounder was enormous. When it fired, the breach traveled 40 in backward, over 3 ft of violent recoil, slamming inside a turret that had perhaps 18 in to spare. Every engineer who looked at the problem said the same thing. It does not fit.
The turret is too small. The recoil is too long. It cannot be done. Wridge returned to England in June of 1943 and was posted to Lworth, the Royal Armored Corps Gunnery School on the Dorset Coast. He arrived expecting to evaluate the A30 Challenger, Britain’s official answer to the heavy German tanks. He inspected it.
He joined, as one account put it, the chorus of complaints. The Challenger was overweight, unreliable, and months from being ready. It would not make D-Day. But someone at Lworth had been thinking the same thing Witheridge was thinking. Major George Brighty, Royal Tank Regiment, had been at Lworth since early 1943.
Brighty had looked at the 17 pounder. He had looked at the Sherman, and he had done something that every qualified engineer said was impossible. He had put the gun inside the turret. There was a catch. Brighty could not solve the recoil problem, so he had simply removed the recoil system entirely. He bolted the 17 pounder rigid to the turret mount.
No buffer, no spring, nothing absorbing the blast. When the gun fired, the entire tank shook. The chassis took the full force through its frame and suspension. It was brutal. It was crude. Witheridge test fired it from outside the tank three times before he was willing to climb inside and try it. It was by any professional standard a Frankenstein.
But when that shell left the barrel, it could kill a panther. And Witheridge, the man who remembered Gazala, knew exactly what that was worth. What neither of them knew was that the order to stop was already being written. The letter came from the Department of Tank Design. It was direct. Major Brighty and Lieutenant Colonel Witheridge were to cease all work on mounting the 17 pounder in the Sherman tank immediately.
No explanation was given in the order. But the reason was not hard to find. The Department of Tank Design had its own project, the A30 Challenger, and it was behind schedule, over budget, and failing trials. The last thing anyone in the department wanted was two officers at a gunnery school in Dorset proving that a better solution already existed in a shed.
This is the moment where most stories end. A letter from above. A project killed in a single paragraph. Two men reassigned to something harmless. And 18 months later, British tank crews arrive in Normandy with guns that cannot touch the Panther from the front. That is the version of history that almost happened.
But Witheridge had been inside a burning grant at Gazala. He had heard the sound of shells bouncing off German armor, and he was not a man who followed orders when the orders were wrong. He picked up the telephone. Witheridge had spent years in the army. He had connections and he used them without hesitation.
His first call went to Major General Raymond Briggs, the former commanding officer of the First Armored Division in North Africa and now director of the Royal Armored Corps. Briggs had seen the desert. Briggs knew what happened when British guns could not match German armor. He listened. Through Briggs, Witheridge reached Claude Gibb, director general of weapons and instruments production at the Ministry of Supply.
Gibb was not a soldier. He was an industrialist, a man who understood manufacturing. And when Witheridge and Brighty explained what they had done, a 17 pounder firing from inside a Sherman turret, crude but functional, Gibb did not ask whether it was elegant. He asked whether it could be built. The answer was yes.
And Gibb knew something that silenced the skeptics. Colonel William Watson had just returned from Australia where the 17 pounder had already been successfully mounted on the Australian Sentinel tank. It was not theory. It was not a sketch on paper. It had been done on the other side of the world.
Gibb overruled the Department of Tank Design. The Sherman 17 pounder became an official Ministry of Supply project. But here is the part that stung. The project was approved and immediately taken out of Brighty and Witherage’s hands. The official history would later describe them as highly enthusiastic and devoted amateurs.
Their work at Lworth, the locked gun, the shaking chassis, the brutal prototype was set aside. The project was handed to professionals. One professional in particular, WGK Kilbornne was a vicer’s engineer assigned to the department of tank design at Chzie. He was not a soldier. He had never been inside a burning tank.
He did not carry the sound of bouncing shells in his memory. What Kilborn had was something Brighty and Witherage did not. the engineering discipline to turn a Frankenstein into a weapon that could be manufactured by the hundreds and put into the hands of crews who would need it before the invasion.
And he faced the same wall they had faced. 40 in of recoil, 18 in of space, a gun that was physically too large for the turret it needed to live in, and now a deadline. The invasion of France was less than a year away. Every approach that seemed obvious had already failed. You could not shorten the barrel.
That would destroy the velocity that gave the 17 pounder its killing power. You could not enlarge the turret. There was no time to design a new one and no factory toolled to build it. You could not remove the recoil system. Brighty had tried that and it was tearing the tank apart. Kilbornne looked at the problem from a direction no one else had tried.
He did not ask how to fit the gun into the turret. He asked how to redesign the gun so that the turret would not know the difference. What he did next took 3 months and it began with turning the entire weapon on its side. The standard 17 pounder loaded from the top. The brereech swung upward.
The loader dropped a shell in. The brereech swung down. Simple. If you had the ceiling height inside a Sherman turret, there was no ceiling height. the brereech would hit the roof before it opened far enough to load. Kilborn’s first move was to rotate the entire brereech mechanism 90°. Instead of opening upward, it now opened to the left.
The loader would push the shell in sideways. It was awkward. It was slower. And it worked because the turret was wider than it was tall. By using the width instead of the height, Kilborn had stolen the inches he needed. But that was only the beginning. The recoil cylinders on a standard 17p pounder sat behind the gun in a straight line, absorbing 40 in of backward travel.
There was no room for 40 in behind the gun in a Sherman turret. Kilbornne threw out the original cylinders entirely. He designed new ones, shorter, fatter, and mounted them not behind the gun, but on either side of it. Two cylinders, one high, one low, cradling the barrel between them. Each cylinder absorbed half the recoil. Neither needed 40 in.
Together, they stopped the gun in a space the turret could handle. Think about what that means. The problem that every engineer had called unsolvable. The gun is too big for the turret. Kilbornne solved not by changing the turret, but by changing how the gun lived inside it. Then came the secondary problems, and there were many.
The bigger breach meant the loader could no longer escape through the commander’s hatch in an emergency. So, Kilbornne cut a new hatch into the turret roof. The radio that normally sat at the back of the turret had nowhere to go. So, he welded an armored box onto the outside, what crews would come to call the bustle, and punched a hole through the casting to reach it.
The hull gunner’s position was eliminated entirely. his seat, his gunport, his periscope, all removed, and the space filled with racks for the 17 pounders ammunition, which was longer and heavier than the old 75 mm rounds. By November 11th, 1943, Kilbornne had a working prototype.
The Frankenstein had become a real tank. And now something remarkable happened. Before the prototype had even completed final testing, before the War Office had signed off on performance, before anyone had fired it in conditions resembling combat, an order was placed for 2,100 units. Hold that number. 2,100 tanks ordered before the design was proven.
That was not confidence. That was desperation. The men making that decision knew what was waiting in France. They knew about the Panther. They knew that without this weapon, British armor would land at Normandy, unable to fight the enemy’s heaviest tanks head on. And they knew the Challenger would not be ready in time.
Production began in January of 1944. The factories worked from existing Sherman holes, mostly the M4 A4, designated the Sherman 5 by the British. Each conversion took weeks of skilled labor. The turret had to be partially rebuilt. The gun had to be factory fitted with Kilborn’s modified recoil system.
Every Firefly, crews had started calling it that by March, likely because of the violent muzzle flash when the 17 pounder fired, was a handmade modification of a mass-roduced American tank. By May 31st, 1944, 6 days before the invasion, 342 Fireflies had been delivered to the 21st Army Group. 342 For an entire army group preparing to invade a continent defended by panthers, tigers, and the best equipped armored divisions Germany had ever fielded.
That was enough for exactly one Firefly per troop of four tanks. Three ordinary Shermans whose 75mm guns could not kill a Panther from the front and one Frankenstein that could. The men who would crew those Fireflies had no idea they were about to become the most hunted tanks in Normandy. On June 6th, 1944, the tanks of the fourth/7th Royal Dragoon Guards rolled off their landing craft onto Gold Beach at 7:20 in the morning.
They were the first armored unit to touch Normandy. Among them was Sergeant Wilfried Harris. Harris was 33 years old from Walsaw in the West Midlands. He had joined the 4th/7th before the war, left the army in 35, and come back the day it started. He had been at Dunkirk in 1940, had watched the regiment abandon every vehicle it owned on the beach and sail home with nothing.
Four years later, he was back. This time, commanding a Sherman that looked different from every other tank on the sand. His was one of 342 fireflies in the entire invasion force. One tank per troop, the only one in the troop that could kill what was waiting inland. Within 48 hours, every British tanker in Normandy understood the problem.
The Panther was not rare. Intelligence had predicted scattered appearances, a few here, a few there. Instead, Panzer alone fielded 89 Panthers. The 12th SS Hitler Yugand had more. They were everywhere in the hedros south of the beaches, and every engagement followed the same sickening pattern. British 75s opened fire.
The shells bounced. The Panthers gun answered once. A Sherman burned. But something else was happening. Something the Germans had not expected. On June 9th, three days after the landings, 12 Panthers from the 12th SS attacked the village of Nobessa. A Canadian Firefly commanded by Lieutenant Henry was waiting.
His gunner, Trooper Chapman, watched the Panthers advance in a column until they lined up, as he later put it, like ducks in a row and fired six rounds. Five Panthers were destroyed in under two minutes. The attack collapsed. That engagement sent a message up the German chain of command. Not every Sherman was the same.
One of them hit harder. One of them punched through frontal armor at ranges where the 75 was useless. And that one had a barrel you could identify from a thousand yard. Longer, thinner, unmistakable against the hedro. The order went out to every German tank crew and anti-tank position in Normandy. Find the long-barreled Sherman.
Kill it first before it fires, before anything else. Overnight, the Firefly became the most important tank in every British troop and the most endangered. Crews started looking for ways to hide. Some painted the forward half of the barrel white, a trick called countershading, trying to make it look shorter at distance.
Others fitted false muzzle brakes halfway along the barrel to disguise its true length. A few even bolted dummy 75mm guns to the turret bustle and reverse the turret so the fake gun pointed forward and the real one pointed back. None of it changed the fundamental equation. One Firefly per four tanks. Lose it and the other three had nothing that could stop a Panther.
By June 23rd, barely 2 and 1/2 weeks in, 22 fireflies had been knocked out across Normandy. Only six replacements had arrived. Remember that number from earlier, 342 delivered before the invasion. Now, think about what 22 losses and six replacements means for a weapon you cannot afford to lose. This was the state of things on June 13th when the 50th North Umbrean Infantry Division received orders to push south of Bayou and take a cluster of villages.
One of them was called Lynv. The division would attack with the Durham Light Infantry on foot, supported by tanks of the fourth/7th Dragoon Guards. Harris’s Firefly was assigned to fourth troop A squadron. At full strength, the troop had four tanks. By the morning of June 14th, it had three, one already lost.
Lieutenant Morrison commanded. Corporal Johnson had a standard Sherman. And Harris had the only gun in the troop that could answer what Panza there was about to send down the road. The Durham stepped off at 10:15. What they walked into would cost them 353 men in a single day. The attack on LJV was preceded by everything the British could throw.
Divisional artillery laid a creeping barrage across the fields south of Bayer. Spitfires came in low, firing rockets into the tree lines. At 10:15 on the morning of June 14th, the men of the sixth and 9th battalions, Durham Light Infantry, rose from their positions and walked forward.
The Germans of Panzoair were waiting for them. This was not a conscript division holding a quiet sector. Panzelair was the German army’s armored demonstration unit assembled from the instructors of every tank school in the Reich. Every soldier had been selected for combat experience. Every crew had trained others before being sent to fight.
They were by any measure among the finest troops Germany could field. and they had been in Normandy since June 8th, digging in around Tilly Cersul and the villages to its west. They let the Durhams come close, very close, 150 yards, the length of a football pitch and a half. Close enough to see faces. Then they opened fire. What followed was 5 hours of fighting at a range where war becomes personal.
Hedros turned every lane into an ambush. German machine guns covered every approach. Snipers worked the upper windows of stone farmhouses. The Durhams fought field by field, house by house, with bayonets and grenades and the kind of grinding violence that fills casualty reports with numbers that cannot convey what happened to the men behind them.
By early afternoon, the village was taken. The price was 353 casualties in the Durham battalions, killed, wounded, and missing in a single day. A six DLI officer would later call it the best attack the battalion launched during the entire Normandy campaign. That gives you some idea of what the worst ones looked like. Major Mog reached the village center and set up a casualty station in the church.
The panzer layer infantry pulled back and now the tanks came forward. Fourth troop a squadron fourth/7th dragoon guards rolled into lv to hold what the infantry had paid for in blood. Three tanks Morrison Johnson Harris one firefly. Morrison parked his Sherman near the church center of the village covering the crossroads.
Johnson positioned his to the south, watching the road from below. Harris drove his Firefly to the eastern end of the main road, the road that ran straight toward Tis, straight toward the German lines, and stopped. He was facing east. Behind him, the village around him, the Durhams organizing their defense, dragging wounded into the church, setting up what anti-tank guns survived the advance, two six pounders.
Ahead of him, 800 m of open road lined with hedge, running into territory. Panzer lair, still controlled, Harris opened his Koopa hatch. He stood in his commander’s position, binoculars to his eyes, scanning east. Beside him in the turret sat his gunner, trooper Ian McKillip. The two had worked together long enough to need no speeches. Harris spotted.
McKillip fired. That was the partnership. Whether it would work against what was coming depended on something neither man controlled. Whether the enemy came from the front where the 17 pounder could reach or from a direction where even the Firefly was just another thin skinned Sherman with nowhere to hide.
For a few minutes, the road east was empty. Then Harris saw movement. On the road from Tilly, shapes in the afternoon haze, low, angular, moving fast. He adjusted his binoculars. Two vehicles, heavy. The silhouette was unmistakable to any man who had been briefed on German armor in the weeks before the invasion.
The long gun, the sloped glacis, the wide tracks. Two Panthers were driving straight at LEV 800 meters away and closing. And Sergeant Harris, sitting in the one tank within a mile that had any chance of stopping them, had perhaps 10 seconds to decide whether to fire first and reveal his position or hold and risk letting 45 tons of German steel fire first.
He did not wait. Harris gave the order. McKillip laid the crosshairs on the lead panther 800 meters out coming straight down the road. He fired. The 17 pounder round left the barrel at nearly 3,000 ft per second. At that range, the flight time was under a second. The shell struck the Panther’s hull.
The tank stopped dead. Smoke poured from the hatches. The crew did not emerge. One round, one Panther. Harris did not pause. The second Panther was right behind the first, already slowing. Its crew had seen the lead tank shutter and halt, but had not yet understood what killed it. They had seconds to react. They did not get them.
McKillip fired again. The second round hit the second Panther. The tank lurched, veered off the road, and stopped. It was disabled. The crew bailed and were caught by Durham infantry as they scrambled into the hedge row. Two rounds, two panthers. The eastern approach to Langev was shut. Now Harris did something that separates a competent tank commander from an exceptional one.
He did not stay in position. Two burning panthers on the east road told every German observer exactly where a 17 pounder was sitting. So Harris reversed out, drove through the village, and repositioned to the northwest side near a farmhouse screened by oak trees with a clear sight line down the western approach from Lasen Odier.
He had been in the new position for perhaps 20 minutes when he saw them. Three more panthers from the west this time moving in column along the road toward the village. They had not seen him. They did not know that the gun, which had just killed two of their tanks on the opposite side of the village, was now sitting behind a row of oaks on their flank. Harris watched them come.
He waited until the geometry was right, until the Panthers were passing across his field of fire rather than driving toward him. A flank shot. The Panthers side armor was 40 mm, less than a third of the frontal plate. At this angle and this range, McKillip could go through it like paper. Harris gave the word.
McKillip fired. The first round struck the lead panther in the engine compartment. It burned instantly. The third panther, the rearmost in the column, was hit next. A shell through the back. It stopped inside the village. The middle panther took a round in the running gear, lost steering, rolled another hundred yards, and broke down near the church where its crew abandoned it. Three rounds. Three Panthers.
Five rounds total. Five Panthers destroyed or disabled. Not a single miss. Let that settle for a moment. A tank that Britain’s own Ministry of Supply had tried to kill in its cradle. A weapon built by two officers who were ordered to stop. engineered by a vicer’s man who turned the gun sideways to make it fit, rushed into production before the prototype was even proven, had just done in five rounds what no other Allied tank in Normandy could do at all.
The fighting around Lva continued through the afternoon. Corporal Johnson’s Sherman took a hit and was knocked out. His crew escaped wounded. Captain John Sterling arrived with a second Firefly troop and put three rounds into a Tiger, destroying it. By nightfall, nine German tanks lay burning in and around the village.
The Durham light infantry and the fourth/7th Dragoon guards held lv. But the story that traveled farthest from that village was not the infantry sacrifice and not the total count of tanks destroyed. It was five rounds fired by one crew in one modified Sherman and the fact that every round found its mark.
Within days, the report reached 21st Army Group headquarters. Within weeks, it reached the War Office in London. And within months, it reached the desks of the two men who had started all of this in a shed at Lworth with a locked gun, a shaking chassis, and an order telling them to stop, and who had been dismissed as amateurs for their trouble.
What those reports set in motion would reshape British armor for the rest of the war. After LJV, the numbers moved fast. Production of the Firefly accelerated through the summer. By late June, 149 were in Normandy. By the end of July, 235. By autumn, the allocation doubled. Two fireflies per troop instead of one.
By the time the factories stopped in 1945, between 2,100 and 2,200 had been built. Everyone carried Kilborn’s sideways breach, his shortened recoil cylinders, his welded bustle. Everyone descended from a prototype that shook itself apart in a shed in Dorset. The Germans never stopped hunting them. For the rest of the campaign, the order held, “Kill the long-barreled Sherman first.
” Firefly crews learned to live as marked men. They painted their barrels. They hid behind hedge. They knew that the muzzle flash of the 17 pounder, bright enough to blind the gunner for a moment, told every German within a mile where they sat. They fired anyway. And something unexpected showed in the loss reports.
Despite being the priority target, 19% of Fireflies were knocked out in Normandy compared to 29% of standard Shermans. The most hunted tank in every troop was surviving better than the ones the Germans were supposed to ignore. When you can kill the thing that is trying to kill you, the arithmetic changes. The fourth/7th dragoon guards fought on through France.
They became the first armored unit to cross the Sen. They led the column toward Arnum during Market Garden. They pushed through northern Germany and finished the war at Bremerhav on the North Sea coast, a long way from Gold Beach. Sergeant Harris survived. He had survived the interwar army, survived Dunkirk, survived the Hedros, and survived commanding the most targeted type of tank in every engagement he entered.
The man from Walssaw, who had first worn the 4th/7th’s badge in peace time, had now worn it through two evacuations and an entire war. Trooper McKillip, the man whose hands put five rounds on five targets without a single miss, survived beside him. Of Brighty and Witherage, the records say less. The official history called them highly enthusiastic and devoted amateurs.
They were not invited to take credit when the Firefly proved itself, but the idea, the stubborn, unreasonable insistence that a 17 pounder could live inside a Sherman turret belonged to them. Two officers at a gunnery school who refused to accept that the next campaign would be fought with the same gun that had failed in the last one.
If you go to Lv today, the village is quiet. Stone houses line the same roads. There is a memorial to the 4th/7th Dragoon guards on the road north of town. For years after the war, two of the panthers that Harris and McKillip destroyed sat rusting at the western entrance, blackened and silent beside the hedro, left where they had burned.
Go back to where this started. A village called Lv. A sergeant in a tank that looked wrong. Barrel too long. breach opening sideways. A steel box bolted where it did not belong. A tank the system never wanted. That existed only because two men disobeyed, one engineer reimagined, and a country gambled on a weapon it had not finished testing.
Five shots, five Panthers. Not because the machine was perfect, but because the right people refused to let it die before it could prove what it was. They called it a Frankenstein. On June 14th, 1944, the monster answered, “Thank you for watching this all the way through.
If this story meant something to you, a like helps more than you might think. It tells the system that people care about real history, and it pushes this video toward others who feel the same. If you’re not subscribed, now is the time. Hit subscribe and the bell so you don’t miss the next one. I’d love to know where you’re watching from.
And if someone in your family served in the Second World War, a parent, a grandparent, someone who never talked about it much, tell me about them in the comments. Those stories deserve to be heard. I’ll see you in the next
