Rubuta ci gaba ga wannan sakin layi - Fiat 3000s da aka fara ingantawa kuma an sanya su a matsayin carro d'assalto Fiat 3000, Mod. 21. ko Carro Armato L5/21 kuma daga baya ya haɓaka fasalin 3000, wanda ke dauke da bindiga 37/40, an gwada shi a cikin 1929 kuma an karbe shi a hukumance a cikin 1930 tare da sunan carro d'assalto Fiat 3000, Mod. 30 ko L5/30 tanki mai sauƙi har yanzu suna amfani da su lokacin da yakin duniya na biyu ya fara. Tare da shigar Italiya cikin Yaƙin Duniya na II a watan Yunin 1940, an yi amfani da Fiat 3000s da yawa da ke aiki tare da Sojojin Italiya a kan aikin Girka-Albania. Sun kuma kasance daga cikin tankunan Italiya na ƙarshe don tsayayya da Allies, kamar yadda a watan Yulin 1943, lokacin da Allies suka sauka a Sicily
, kamfanonin tanki biyu na Italiya a tsibirin har yanzu suna sanye da 3000. An haƙa kamfani ɗaya kuma an yi amfani da motocin su azaman katanga, yayin da aka yi amfani da ɗayan kamfani a cikin rawar motsawa a Yaƙin Amphibious na Gela, tare da 'yan tankunan da suka tsira daga shirin Allied.