united states army coast artillery corps

Designed in 1942 by the American Ordnance Company, an old-established gun-making concern of Bridgeport, Connecticut, the M3 half-track carrier, known as the 40mm Gun Motor Carriage T68 (GMC T68) and featured unusual gun layout. The guns were placed, one above the other, a configuration with an...

I was looking for the history of the anti-aircraft guns of the US Army since 1918 but then stumbled upon an AA gun that I never heard of before. A little effort to find some information was done, but it's surprisingly quite scarce. 4.7-inch Mobile Gun, M1920E The gun was supposed to be the...