Vintage USAAF US Army Air Forces M-37 M37 Wool Shirt 1940's WW2 Patches Size Small. 20' ARMPIT TO BOTTOM HEM. VERY GOOD CONDITION NEAR MINT CONDITION. BUT PLEASE CHECK ALL PICTURES. USAAF US ARMY AIR FORCES WOOL SHIRT 1940'S WW2 TENTH AIR FORCE, CBI, HONORABLE SERVICE LAPEL AND TECHNICAL SERGEANT 2ND GRADE PATCHES SIZE SMALL. Tenth Air Force (Patch on the left side) was constituted on 4 February 1942 and activated on 12 February, built up around a nucleus of air force personnel newly arrived from Java and the Philippines, under the command of Maj. It had its headquarters at New Delhi. ...