#tank corps

By 5 October, they had restored twenty-two to working condition. Three days later, the tanks supported the 30th Division in an attack on the village of Brancourt. Here, effective cooperation between the infantry and tanks, favorable terrain, and good weather conditions resulted in a remarkably successful attack. Nine tanks, less than half of the tanks that went in to action, were immobilized by German artillery fire or mechanical failure. Second Lieutenant Paul S. Haimbaugh, an officer in Company C, described his experience as his tank neared its objective point:

US domed collar disk 1926-1937

Nov 29 1917 During the Battle of Cambrai, war photographer John Warwick Brooke takes these photos of a tank of 'C' Battalion, Tank Corps, travelling along the Marcoing Road, bringing in a captured German 15 cm naval guns through a wood east of Ribecourt.

November 29 1917 -11-29

In Action: WWI US Tank Guns

This photograph shows troops from the US Army’s Tank Corps (National Army), not to be confused with the Tank Corps of the American Expeditionary Force, in France. The US arm of the Tank Corps was based at Camp Colt near Gettysburg, Pennsylvania. The photograph was taken in June 1917, and shows troops learning how to use the various guns mounted in Allied light and heavy tanks. 

From foreground to background we have a 37mm canon (the French Canon d'Infanterie de 37 modèle 1916 TRP) which was mounted in the FT light tank, a Hotchkiss Mle 1914, mounted in most French tanks, next is an M1917 Marlin Rockwell tank machine gun (which had an improved gas system designed by  Carl Swebilius) which was planned to be mounted in US-built tanks. Next to the Marlin is the gun it evolved from, the Colt-Browning M1895, (likely present for comparison purposes) and finally is a Lewis Gun, mounted in several types of British heavy tanks.

Interestingly, there is no Hotchkiss M1909 Benét–Mercié present, which at the time was in the US inventory and was also in use by the British as the Hotchkiss Mark I/I* Portative and was used in a number of British tanks including the Medium Whippet MkI. The US entered the war with no tanks of its own and the Tank Corps in the US was without tanks of its own for much of the war, while the AEF’s Tank Corps used a mixture of British and French tanks and did see action in Autumn 1918.

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