Army Transport Aviation Combat Operation - USA Voorschrift, Field Manual, 57-35 Browning machine gun caliber .30, HB, M1919A4 (mounted in combat vehicles) - USA Basic Field Manual, FM 23-50 schiffer military/aviation history U.S. combat helmets of the 20th century mass production / Mark A. Reynosa Journal of the Orders and Medals Society of America Man at arms : the magazine of arms collecting-investing / National Rifle Association - Man at Arms fot the Gun and Sword Collector : the … Cave of the Winds : the remarkable history of the Langley Full-Scale Wind Tunnel