An M15 CGMC from the 834th Anti-Aircraft Artillery Battalion of the US Army protecting Yomitan Airfield, Okinawa, June 7th, 1945.
The M15 CGMC (Combination Gun Motor Carriage) was an anti-aircraft vehicle based on the M3 half-track platform, produced from 1942 to 1944 by the White Motor and Autocar companies. Unlike its counterparts, the M13 MGMC and M16 MGMC, the M15 had a 37mm M1 autocannon, giving the vehicle greater range for firing at aircraft. On either side of the 37mm gun were two 12.7mm M2 Browning machine guns. Similar to many Allied anti-aircraft platforms, their role never truly came about due to the Allies maintaining air superiority, especially in the last few years of the war, and as such often found a role as infantry support vehicles.
