Antiaircraft Truck Mount Model 1917 for 75mm Field Gun Model 1916.
The 75mm field gun model 1916 and its mount were installed on the rear of a White T.B.C. 4x2 truck. The ordnance's length of recoil was 33" (84cm), maximum vertical range was ~6,000m (~6,600 yards), and horizontal range was ~9,000m (~9,800 yards). Muzzle velocity for its 15lb (6.8kg) high-explosive shell was 1,830 feet/s (558m/s). (Picture from Handbook of Ordnance Data.)
