Kammala jumla mai zuwa: An karɓa a Bayyana Unit Citation don yin aiki a Wiener Neustadt, Austria a ranar 10 ga Mayu, 1944: lokacin da wasu kungiyoyi suka juya baya saboda mummunan yanayi, 456th ya ci gaba da manufa kuma, yana tsayayya da hare-haren da abokan gaba suka yi, suka harbe cibiyar masana'antu. Ya taimaka wajen shirya hanya da kuma goyon bayan
mamaye kudancin Faransa a watan Yuli da Agusta 1944. A lokaci guda, ya fadada ayyukan da suka gabata don haɗawa da hare-haren kan matatun mai da wuraren adanawa, ayyukan locomotive, da kuma viaducts a Faransa, Jamus, Czechoslovakia, Hungary, Austria, da Balkans.