infantry
noun [ U, + sing/pl verb ] uk/ˈɪn.fən.tri/ us/ˈɪn.fən.tri/
步兵，步兵团
the part of an army that fights on foot
The infantry was/were sent into battle. 步兵团被派往战场。
It's a light/heavy infantry unit. 这是一个轻／重型步兵团。
Compare: cavalry