However, in most cases captured equipment wasn't used for extended periods nor extensively except in some specialized units or circumstances {See initial OB for Co C 504 PIR at Cheneux in KGP for example}. Audie Murphy may have picked up an MG 34/42 for a bit to wipe out an enemy position but he certainly wouldn't want to keep it as part of his Sqd/Plt's MTO&E for any period of time. Infantrymen, especially, would be able to tell friendly from foe by the sounds of their weapons fire, and positive ID of the enemy wasn't exactly a rule of engagement back then. It was kind of like my dad used to say to hunters that would come up on him in the woods and bother him by asking if he'd seen much. He some times replied, "Nope, haven't seen much but got a lot of good sound shots off!"