Kammala jumla mai zuwa: A lokacin fadada sojojin Amurka a shirye-shiryen yakin duniya na biyu, an sake tsara rukunin a ranar 30 ga Disamba, 1940 a matsayin Baturi A, 25th Field Artillery Battalion. A ranar 19 ga Disamba, 1942, an sake sake rukunin rukunin a matsayin Baturi A, 604th Field Artillery Battalion kuma an sanya shi zuwa Camp Carson, Colorado a matsayin wani ɓangare na sabon rukunin 10th Infantry Division (Mountain). A matsayin wani ɓangare na Ƙungiyar Mountain na 10, ƙungiyar ta tashi daga Amurka don Turai Theater of Operations, ta isa Italiya a watan Janairun 1945. A lokacin yakin duniya na II, rukunin ya sami kamfen na kamfen don ayyukan a Arewacin Apennines, Po Valley, Rhineland,
Ardennes-Alsace, da kuma Tsakiyar Turai. Bayan kammala yakin duniya na biyu a Turai da Pacific, Baturi A, 604th Field Artillery Battalion an sake sanya shi a matsayin Baturi A, 25th Field Artillery Battalion kuma ba da daɗewa ba bayan haka an kashe shi.