Why This ‘Backward’ British Tank Destroyer Had To Reverse Into Battle And Still Killed Panzers

Late 1943, the Elswick works of Vicers Armstrong’s Newcastle upon Tine, Northern England.

A tracked vehicle rolls off the factory floor and onto a rain soaked test yard.

It is small, it is low, it weighs barely 16 tons, and bolted to the hull, pointing backward over the engine deck, sits one of the largest anti-tank guns in the world, a 76.2 mm, 17 pounder with a barrel over 13 ft long.

The gun faces the wrong way.

The barrel points behind the vehicle, not in front of it.

Every officer who sees it for the first time says the same thing.

It looks wrong.

It looks like a mistake.

It looks like someone welded the gun on backward and nobody bothered to fix it.

Yet over the next 18 months, this strange machine would fight across Italy and Northwest Europe, arm over a dozen Royal Artillery anti-tank regiments, destroy Panthers, Tigers, and Panzer Fours at ranges where nothing else in the British infantry arsenal could touch them and earn the grudging devotion of every crew that learned how to fight in reverse.

655 would be built.

Some would still be in military service a decade after the war ended on the other side of the world.

Its official designation was the self-propelled 17 pounder Valentine Mark1.

The men who crewed it called it the Archer, and it was the most powerful tank killer Britain ever squeezed onto the cheapest possible chassis.

To understand why the Archer existed, you need to understand the crisis Britain faced in 1942.

For 2 years, British anti-tank capability had been falling dangerously behind German armor development.

The two-pounder gun that equipped most British tanks and anti-tank units was near useless against anything heavier than a light tank.

The six pounder, arriving in quantity by late 1942, could handle Panza 3es and Panzer 4s, but nothing heavier.

Then the Tigers arrived.

On the 1st of December 1942, Tiger tanks of Shwe Panzer Abtailong 501 went into action at Tibour in Tunisia.

The results were catastrophic.

55 Allied tanks destroyed in a single engagement.

75 mm gun rounds bounced off Tiger side armor at less than 150 ft.

Britain had been developing the 17 pounder anti-tank gun since late 1940, anticipating heavier German armor.

But when Tigers appeared in North Africa, the gun still lacked proper carriages.

In a desperate improvisation, the first 100 prototype 17 pounders were rushed to Tunisia, mounted in 25 pounder field gun carriages, a stop gap cenamed pheasant, devastating, but the towed 17 pounder was enormous, weighing over two tons, and could take a full day to dig into a proper firing position.

It lacked battlefield mobility entirely.

Earlier attempts to mount anti-tank guns on mobile chassis had failed.

The Bishop, a 25 pounder on a Valentine chassis, had an absurdly tall silhouette and such limited gun elevation that crews had to build earth ramps to compensate.

It was, according to multiple sources, poorly received almost universally.

The Deacon, a six pounder bolted onto an armored lorry, had terrible cross-country performance, and only 175 were built.

Something far better was needed, and it was needed immediately.

In September 1942, work began to mount the 17 pounder on a vehicle chassis.

Vicers Armstrongs received the contract and engineer Leslie Little led the design effort.

The Valentine infantry tank was chosen as the base, not because it was ideal, but because it was available, reliable, proven, already in production, and no longer needed as a frontline battle tank.

The fundamental engineering problem was brutal.

The 17 pounder was one of the largest anti-tank guns in the Western Allied arsenal.

The Valentine was one of the smallest tank chassis available.

By March 1943, Vicers had built two pilot vehicles.

one with the gun facing forward conventionally, one with the gun facing rearward over the engine deck.

After firing trials in March and April and an official presentation on the 24th of May 1943, authorities selected the rearwood facing configuration.

The backward gun was not a mistake.

It was a solution to four problems at once.

First, weight distribution.

Mounting the heavy gun forward would have overloaded the front suspension.

Facing rearward, the barrel weight sat over the engine and drive sprockets, distributing mass evenly across the chassis.

Second, length management.

The 4 m barrel would have projected dangerously beyond the hull if forward- facing, snagging on obstacles, making the vehicle unwieldy in hedro country.

Rearward, it overhung the engine deck cleanly.

Structural integrity.

Recoil forces were absorbed through the stronger rear hull structure rather than the weaker front plate.

And fourth, a tactical advantage that was discovered rather than planned.

The vehicle could fire then immediately drive away at full speed without turning around.

No other tank destroyer in the war could do that.

The vehicle itself was a masterpiece of economy.

The Valentine turret was replaced by a low fixed open topped superstructure of welded steel.

Frontal hull armor remained at 60 mm from the original Valentine, but the superructure was just 20 mm all around, enough to stop shell splinters and small arms fire, but nothing more.

This was a deliberate decision.

60 mm no longer guaranteed protection against 1943 anti-tank weapons, and adding it would have pushed weight to 20 tons, destroying the mobility that the archer needed to survive.

Its protection was concealment, not armor.

The engine was a General Motors 671inline six-cylinder two-stroke diesel producing 192 horsepower.

Not powerful, but fuel efficient and by Valentine standards thoroughly proven.

Top speed was 32 km/h on road, off-road roughly 13.

Range was 230 km.

The crew was four, commander, loader, and driver.

The gun carried 39 rounds of ammunition, a mix of armor-piercing capped ballistic, armor-piercing discarding Sabbat, and high explosive.

With standard APCBC ammunition at a muzzle velocity of 884 m/s, the 17 pounder could penetrate approximately 131 mm of armor at 1,000 m.

That was enough to kill a Tiger One frontally at combat range.

With the tungsten cord discarding sabot round, penetration rose to nearly 192 mm at the same distance, theoretically threatening even the Tiger 2.

However, Sabbat rounds were scarce, inaccurate at longer ranges, and typically comprised only 6% of the ammunition load.

The standard round did most of the killing.

The gun’s weakness was its high explosive shell.

The high velocity cartridge demanded thick shell walls, leaving room for barely one pound of explosive filler, less than a standard 75 mm Sherman round.

This made the archer poor at infantry support.

It existed to do one thing, kill tanks.

And at that, nothing in the British infantry division’s arsenal was better.

Before we get into where the archer actually fought and what it did to German armor, if you are enjoying this deep dive into British wartime engineering, hit subscribe.

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The Archer entered operational service in October 1944, initially in Northwest Europe with 21st Army Group.

It was classified as a self-propelled anti-tank gun and operated by Royal Artillery anti-tank regiments attached to infantry divisions, not by the Royal Armored Corps.

The tactical employment was built entirely around ambush and the backward gun made it work.

Crews would drive forward to a concealed position behind a hedge row against a ruined building in a treeine.

Then they reversed into a hull down firing position with the rearward-facing gun now pointing toward the expected enemy approach.

The vehicle stood just 2.25 25 m tall, lower than a standing man, lower than any other tank destroyer in the war.

Concealment was effortless.

When enemy armor appeared, the gunner engaged.

After firing, the driver, already seated, facing the direction of escape, could immediately drive forward at full speed.

No turning, no reversing, no exposing the thin side armor.

Just fire and go.

Crews borrowed a trick from Sherman Firefly units, painting a disruptive camouflage pattern on the long 17 pounder barrel with white paint on the forward half.

German doctrine was to prioritize targeting 17 pounder armed vehicles.

The disguise was not vanity.

It was survival.

Known units operating archers included the 20th anti-tank regiment Royal Artillery, the 54th anti-tank regiment, the anti-tank regiment of the 15th Scottish Infantry Division and the 105th Anti-tank Regiment in Italy.

Canadian forces received them as well.

The second anti-tank regiment, Royal Canadian Artillery, and the third anti-tank regiment, Royal Canadian Artillery, were photographed with archers in the Netherlands and Germany.

The seventh anti-tank regiment of the second Polish corps operated archers in the Italian campaign.

By January 1945, all self-propelled batteries fielded three troops of three archers each, nine vehicles per battery, with Valentine tanks serving as command vehicles.

Detailed combat records for the archer are frustratingly sparse in publicly available sources.

The vehicle arrived late in the war, served in a defensive anti-tank role that generated fewer dramatic accounts than tank-on-tank jewels, and its Royal artillery operators left less accessible unit histories than armored regiments.

But the accounts that survive are vivid.

The most striking comes from the 314th battery of the 105th anti-tank regiment in Italy.

An archer crew detected a Tiger tank and fired, narrowly missing.

The Tiger reversed behind a building for cover.

A Lander Air Observation Post aircraft spotted the Tiger’s new position and relayed coordinates back to the Archer crew.

They fired again.

The 17 pounder round punched through the building wall and struck the Tiger’s inner side armor, knocking it out through a building.

Imperial War Museum photographs confirm archers in action during Operation Veritable.

The Rhineland offensive of February 1945 with vehicles documented in the flooded streets of Crannenburg and near Nutden during the bitter advance through the Reichusfeld forest.

Archers provided anti-tank overwatch at the Battle of Gau and during the Rine crossings of Operation Plunder in March 1945.

Canadian units were photographed with their archers at Oldenberg in May 1945 and at Lewooden in the Netherlands during the liberation of the Northern Provinces.

Because the Allies were overwhelmingly on the offensive from late 1944 onward, the Archer most often found itself securing flanks against German counterattacks and providing direct fire support against fortified positions rather than the pure defensive ambush role it was designed for.

It adapted.

The 17p pounder could still punch through concrete and masonry when no panzer was available to kill.

On paper, faster and heavier designs looked superior.

In practice, the Archer offered something none of them could match.

The American M10 Wolverine weighed nearly 30 tons and carried a 3-in gun that penetrated approximately 88 mm at 1,000 m.

The Archer, at barely half the weight, penetrated 131.

The M18 Hellcat was blindingly fast at 88 km/h and weighed a comparable 17 tons.

But it 76 mm gun delivered the same 89 mm of penetration.

The Archer outgunned it by nearly 50%.

The closest equivalent was the Achilles, which mounted the identical 17 pounder on an American M10 chassis.

The Achilles was faster, had a full 360° traversing turret, and carried better armor, but it weighed 30 tons, sat much taller, and could not escape a firing position without first rotating the hull.

Infantry commanders also treated the Achilles like a tank, pressing it into assault roles it was not designed for.

The archer’s bizarre layout saved it from this fate.

Nobody looked at a backward-facing gun and thought, “Send that to lead the attack.” Against German casemate designs like the Sturmutz 3 and Yagpanza.

The Archer carried clearly superior firepower.

Both German vehicles mounted the 75mm StuK40 gun penetrating roughly 85 mm at 1,000 m, well short of the 17 pounders 131.

The Germans compensated with thicker armor and fully enclosed crew compartments.

The Archer compensated with concealment, low profile, and the ability to vanish after every shot.

Only the Yag Panther with its 88 mm L71 gun clearly outclassed the Archer in firepower.

But the Yag Panther weighed 45 tons and only about 45 were ever built.

The Archer weighed 16.

655 reached service.

The difference between those two facts is the difference between engineering ambition and industrial reality.

The archer was replaced in British service by the Centurion tank and retired by the mid 1950s.

But surplus vehicles found new owners.

Approximately 200 archers were supplied to Egypt where they saw their final combat during the 1956 Suez crisis.

Egyptian archers served alongside Soviet SU00s in the defense of the Sinai and around 17 were lost in the Gaza Strip during Israel’s operation Kadesh.

Jordan received 36 for the Arab Legion and National Guard.

Today at least eight or nine archers survive in museums across six countries.

The tank museum at Bobington holds one.

Others rest in the Netherlands, Israel, India, Australia, and Jordan.

The Queen’s Royal Har Museum displayed one for years.

None is confirmed to be in running condition.

Late 1943, the Elswick works of Vicers Armstrongs.

A vehicle rolls off the factory floor with its gun pointing the wrong way.

It was slow, 32 km/h on a good road.

It was thin skinned, 20 mm of steel on the fighting compartment.

It was open top, exposing crews to artillery fragments, mortar rounds, and weather.

It could not fire on the move.

It had no turret.

Its gun traversed just 11° to either side and the driver sat inches from a breach that slammed backward every time the gun fired.

And yet it worked.

It worked in the frozen mud of the Reichvald.

It worked in the flooded streets of Crownenburg.

It worked on the banks of the Rine.

It worked in the hills of Italy where a 17-pound round passed through a building to kill a tiger on the other side.

The archer was not elegant.

It was not fast.

It was not comfortable.

It was a 16-tonon compromise built on an obsolete chassis with a gun facing the wrong direction.

But it put the most powerful standard anti-tank weapon in the Western Allied Arsenal into the hands of infantry divisions that needed it most at a cost and weight that no other design could match.

Germany built the Yagged Panther, technically magnificent, produced in numbers that barely mattered.

Britain took a tank that was already finished, welded on a gun facing backward, and sent 655 of them to war.

That is not elegance.

That is not perfection.

That is the difference.