The 37 mm Infantry Gun Model 1917 was a light artillery piece produced in the United States during World War I for the French Army.In the infantry support role, it would have been used in loopholing operations to neutralize enemy machine guns in pillboxes.[2] In July 1918 the US ordnance department accepted an offer from the French to sell 200 guns produced by Bethlehem Steel to the US Army.[1] The Model 1917 featured a forged one piece nickel steel barrel with a semi-automatic vertical sliding wedge breech.The split-trail carriage had a hydro-spring recoil system, two wooden spoked wheels and fired Fixed QF ammunition.