Kammala jumla mai zuwa: Rabin rabin da aka fara da farko ba su da mashahuri kuma sojojin Amurka sun kira su "akwatunan Purple Heart" (wani mummunan tunani game da kayan ado na Sojojin Amurka don raunin yaƙi). Babban gunaguni ya ta'allaka ne akan cikakkiyar rashin kariya ta sama daga harsashin harsashi na iska da kuma cewa makamai ba su da isasshen makamai. Omar Bradley ya nakalto a cikin rahotonsa game da rabin waƙa cewa "wani ƙwarewa ne kuma abin dogaro ne. Sunansa mara kyau ya samo asali ne daga rashin ƙwarewar sojojinmu waɗanda suka yi ƙoƙari su yi amfani da shi don abubuwa da yawa". Wata babbar matsala tare da M3 ita ce tsayayyen idler na baya, wanda sau da yawa ya karya a kan ƙasa mai wuya. Kwamandan a Arewacin Afirka sun sayi sassan don gina kayan aiki na baya wanda zai iya magance yanayin da ba shi da kyau, wanda Ma'aikatar Ordnance ta amince da shi a matsayin gyara. A 1943, M3 ya yi aiki a
Sicily da Italiya kuma sun sami rahotanni masu kyau game da shi a cikin aiki. Ya yi aiki a Operation Overlord kuma ya yi aiki a Turai don sauran yakin.