Rubuta ci gaba don wannan sakin layi - Masana tarihi kamar Philip Sidnell sun yi jayayya cewa sojan doki na Roman sun kasance muhimmin bangare na sojojin Jamhuriyar Republican. Duk da haka, wasu masana tarihi sun kawo nasara kamar Cannae da Trebia
a matsayin shaida a kan wannan da'awar. Ka'idojin doki sun hada da yaƙi da doki na abokan gaba da farko, sa'an nan kuma suka kai hari ga doki na abokan gaba daga wurare da dama don karkatar da kwamandan da kuma karya layin kare su. A cikin Daular Daular Daular da aka yi amfani da doki mai sauƙi da masu tuka baka don yin faɗa.