M7 Priest

M7 Priest. The M7 Priest was an American self-propelled artillery vehicle extensively used by Allied forces during World War II. Based on the M3 Lee and later M4 Sherman medium tank chassis, it mounted a powerful 105 mm howitzer in an open-topped superstructure, providing crucial mobile fire support. Its distinctive pulpit-like machine gun mount earned it the nickname "Priest" from British Army troops, and it served as a key component of armored divisions' artillery battalions from the North African Campaign through the final battles in Europe.

Development and design

The urgent need for mobile, armored artillery to support fast-moving armored formations was identified following early experiences in World War II, particularly the Battle of France. The United States Army Ordnance Department initiated development, tasking American Locomotive Company with creating a vehicle using existing components. The design utilized the chassis and Vertical volute spring suspension of the M3 Lee, later transitioning to the improved M4 Sherman platform. The main armament was the proven M105 mm M2A1 howitzer, mounted in a limited-traverse mount on the right side of a high, open-topped fighting compartment. This compartment, armored against shell fragments and small arms, featured the characteristic .50 caliber M2 Browning machine gun on a raised ring mount at the front left, reminiscent of a church pulpit. Power was provided by a Continental R975 radial gasoline engine, giving the vehicle adequate mobility to keep pace with tank units across various terrains.

Service history

The M7 first saw combat in late 1942 with the British Eighth Army during the Second Battle of El Alamein, where its mobility proved highly effective in the desert. It became the standard self-propelled howitzer for both United States Army and British Army armored divisions in all subsequent theaters. M7s provided vital indirect fire support during major operations including the Allied invasion of Sicily, the Italian Campaign, the D-Day landings, and the Battle of Normandy. They were integral to the firepower of units like the 1st Infantry Division (United States) and the 3rd Infantry Division (United States). While vulnerable in direct combat due to its open top and thin armor, it excelled in its intended role. Its service extended beyond World War II, seeing further action with American and allied forces during the Korean War before being gradually replaced by newer designs like the M52 self-propelled howitzer.

Variants

The primary production model was the **M7**, based on the M3 Lee chassis. The **M7B1**, introduced in 1943, was built on the superior M4 Sherman chassis with a wider hull. A corresponding Canadian variant, the **Sexton**, developed in parallel, mounted a British 25-pounder gun. For the Pacific Theater, a limited number of **M7**s had their howitzer replaced with a 155 mm gun in a larger mount, designated the **M12 Gun Motor Carriage**. Post-war, some vehicles were converted into armored personnel carriers or ammunition carriers, such as the **M7B2**, which featured a heightened superstructure to accommodate a gun with greater elevation.

Operators

The primary operator was the United States Army, which fielded it in numerous armored and infantry divisions. The British Army received over 3,400 through Lend-Lease and used them extensively in Europe. The Free French Forces were also significant users, employing them during the Liberation of France and later in French Indochina. Other Allied operators included the Polish Armed Forces in the West, the Brazilian Expeditionary Force, and the South African Army. Post-war, M7s were supplied to various nations including Italy, Nationalist China, Pakistan, and Israel, which used them in the 1948 Arab–Israeli War.

Surviving examples

Numerous M7 Priests survive in museums and private collections worldwide, a testament to its widespread production and use. Notable examples are displayed at the The Tank Museum in Bovington, the Musée des Blindés in Saumur, and the Yad La-Shiryon museum in Latrun. Others can be found at the Kubinka Tank Museum in Russia, the Moscow Victory Park, and the Australian Armour and Artillery Museum. Several are preserved as memorials, such as one at the Imperial War Museum Duxford, and others remain in operational condition with historical vehicle groups.