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The 105 mm Howitzer Motor Carriage M7 was an American self-propelled artillery vehicle produced during World War II. It was given the official service name 105 mm Self Propelled Gun, Priest by the British Army, due to the pulpit-like machine gun ring, and following on from the Bishop and the contemporary Deacon self-propelled guns.
U.S. Army observers realized that they would need a self-propelled artillery vehicle with sufficient firepower to support armored operations. Lessons learned with half-tracks (such as the T19 Howitzer Motor Carriage (HMC) with a 105 mm howitzer on the M3 Half-track chassis) also showed that this vehicle would have to be armored and fully tracked. It was decided to use the M3 Lee chassis as the basis for this new vehicle design, named T32.
The pilot vehicles used the M3 chassis with an open-topped superstructure, mounting an M1A2 105 mm howitzer, with a machine-gun added after trials. The T32 was accepted for service as the M7 in February 1942 and production began that April. The British Tank Mission had requested 2,500 to be delivered by the end of 1942 and a further 3,000 by the end of 1943, an order which was never fully completed.
As the M4 Sherman tank replaced the M3, it was decided to continue production using the M4 chassis (the M4 chassis was a development of the M3). The M7 was subsequently supplanted by the M37 HMC (on the "Light Combat Team" chassis that also gave the M24 Chaffee light tank). While the first M7s were produced for the U.S. Army, some were diverted to support the British in North Africa. Ninety M7s were sent to the Eighth Army in North Africa, which was also the first to use it, during the Second Battle of El Alamein, along with the Bishop, a self-propelled gun based on the 87.6 mm calibre Ordnance QF 25-pounder gun-howitzer.
The British had logistical problems with the M7, as it used U.S. ammunition that was not compatible with other British guns and had to be supplied separately. The problem was resolved in 1943 with the Sexton, developed by the Canadians on an M3 chassis, using the standard British QF 25-pounder. The British used the M7 throughout the North African and Italian campaigns.
The 3rd and 50th British, and 3rd Canadian divisions that landed on Sword, Juno and Gold beaches at the start of the Allied invasion of Normandy had their artillery regiments equipped with the M7; these were replaced by the standard towed 25-pounder guns of the infantry in early August. The M7 was also used in Burma and played a significant part in the Battle of Meiktila and the advance on Rangoon in 1945. After the Sexton appeared, most British M7s were converted into "Kangaroo" armored personnel carriers.
M7 Priest passes by a Humber Scout Car as it moves into position to support an attack on Caen, 8 July 1944. During the Battle of the Bulge, each U.S. armored division had three battalions of M7s, giving them unparalleled mobile artillery support. A total of 3,489 M7s and 826 M7B1s were built. They proved to be reliable weapons, continuing to see service in the U.S. and allied armies well past World War II.
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M7 PRIEST
The 105 mm Howitzer Motor Carriage M7 was an American self-propelled artillery vehicle produced during World War II. It was given the official service name 105 mm Self Propelled Gun, Priest by the British Army, due to the pulpit-like machine gun ring, and following on from the Bishop and the contemporary Deacon self-propelled guns.
U.S. Army observers realized that they would need a self-propelled artillery vehicle with sufficient firepower to support armored operations. Lessons learned with half-tracks (such as the T19 Howitzer Motor Carriage (HMC) with a 105 mm howitzer on the M3 Half-track chassis) also showed that this vehicle would have to be armored and fully tracked. It was decided to use the M3 Lee chassis as the basis for this new vehicle design, named T32.
The pilot vehicles used the M3 chassis with an open-topped superstructure, mounting an M1A2 105 mm howitzer, with a machine-gun added after trials. The T32 was accepted for service as the M7 in February 1942 and production began that April. The British Tank Mission had requested 2,500 to be delivered by the end of 1942 and a further 3,000 by the end of 1943, an order which was never fully completed.
As the M4 Sherman tank replaced the M3, it was decided to continue production using the M4 chassis (the M4 chassis was a development of the M3). The M7 was subsequently supplanted by the M37 HMC (on the "Light Combat Team" chassis that also gave the M24 Chaffee light tank). While the first M7s were produced for the U.S. Army, some were diverted to support the British in North Africa. Ninety M7s were sent to the Eighth Army in North Africa, which was also the first to use it, during the Second Battle of El Alamein, along with the Bishop, a self-propelled gun based on the 87.6 mm calibre Ordnance QF 25-pounder gun-howitzer.
The British had logistical problems with the M7, as it used U.S. ammunition that was not compatible with other British guns and had to be supplied separately. The problem was resolved in 1943 with the Sexton, developed by the Canadians on an M3 chassis, using the standard British QF 25-pounder. The British used the M7 throughout the North African and Italian campaigns.
The 3rd and 50th British, and 3rd Canadian divisions that landed on Sword, Juno and Gold beaches at the start of the Allied invasion of Normandy had their artillery regiments equipped with the M7; these were replaced by the standard towed 25-pounder guns of the infantry in early August. The M7 was also used in Burma and played a significant part in the Battle of Meiktila and the advance on Rangoon in 1945. After the Sexton appeared, most British M7s were converted into "Kangaroo" armored personnel carriers.
M7 Priest passes by a Humber Scout Car as it moves into position to support an attack on Caen, 8 July 1944. During the Battle of the Bulge, each U.S. armored division had three battalions of M7s, giving them unparalleled mobile artillery support. A total of 3,489 M7s and 826 M7B1s were built. They proved to be reliable weapons, continuing to see service in the U.S. and allied armies well past World War II.
I hope you liked this post and as always have a chilled day from the Viking
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