二战中,美军选用汤姆逊M1928A1、M1A1、M3、M3A1冲锋枪和莱辛M50、M55冲锋枪作为制式装备,此外还使用多种冲锋枪,其中UD(联防)42式是一支供美军战略情报局(OSS)用的冲锋枪。 关于OSS 二战中,美军的OSS是一个指导游击战、实施潜入作战的机构,并拥有一支秘密作战部队。该部队潜入德、日、意轴心国军队占领区,在同盟国军队反攻前提供情报,为成功地指挥作战发挥了 In World War II, the U.S. military chose the Thomson M1928A1, M1A1, M3, M3A1 submachine guns and the Lessing M50 and M55 submachine guns as standard equipment. In addition, a variety of submachine guns were used, of which UD 42 was an OSS ) Submachine gun. About OSS In World War II, the U.S. military OSS is a body that guides guerrilla warfare and sneaks into combat operations and owns a clandestine combat force. The force sneaked into the occupied territories of the German, Japanese and Italian Axis Powers to provide intelligence before the allied forces counterattack and played a role in the successful command operation