Guns › 37 mm Gun M337 mm Gun M337 mm Gun M337 mm Gun M3Modification of37 mm Gun M3Caliber37 mmService193119321933193419351936193719381939194019411942194319441945United States · Pacific≈ Dec 1941 – Aug 1945United States · North Africa≈ Nov 1942 – May 1943United States · Italy≈ 10 Jul 1943 – Dec 1944Vehicles 1193119321933193419351936193719381939194019411942194319441945M6 Fargo5,380≈ Nov 1942 – May 1943≈ Nov 1943 – Feb 1944Artillery 119311932193319341935193619371938193919401941194219431944194537 mm Gun M318,702≈ Dec 1941 – Aug 1945≈ Nov 1942 – May 1943≈ 10 Jul 1943 – Dec 1944