The Cardassian Mechanized Infantry was a division of the Cardassian Central Command. This unit consisted of infantry equipped with armored troop carriers or infantry fighting vehicles.
In 2370, while suffering from the degradation of his cranial implant, Elim Garak gave three versions of the reason for his exile to Doctor Julian Bashir. In one of the versions, Garak claimed that he was a gul during the Occupation of Bajor. As a gul, he was assigned to the Cardassian Mechanized Infantry outside the Bajoran capital. (DS9: "The Wire")