Rubuta ci gaba ga wannan sakin layi - A lokacin yakin duniya na biyu an kammala aikin injiniya. 3e da 5e RCA an sanye su da M4 Sherman da M5 tankuna masu haske. 5e RCA musamman ya sauka a Provence
a watan Agusta 1944, kuma yana daya daga cikin na'urorin farko da za su yi aiki sosai don yaƙi. Ya shiga cikin yaƙe-yaƙe da yawa yayin ɗaukar Toulon, a cikin kwarin Rhone, ta hanyar Burgundy, Alsace, da kuma a cikin Black Forest. Rundunar ta sami lambar Rhine da Danube.