The lieutenant was put in charge of an infantry platoon.

中尉被委任指挥一个步兵排。

《新英汉大辞典》

They formed up in battle line, infantry in the center, cavalry on the wings, artillery to the rear firing over their heads.

他们排成作战队形，步兵在中央，骑兵在两翼，炮兵在后面朝他们头顶上方开火。

youdao

A U.S. infantry battalion was marching down the street.

一个美军步兵营沿着街道行进。

《柯林斯英汉双解大词典》

One cover shows the Twentieth Colored Infantry of Eighteen Sixty-Four receiving a silk banner in New York City.

VOA: special.2011.02.11

So if you're fighting a non-hoplite infantry crowd, you're in great shape.

所以如果你和非方阵的步兵群战斗,你就能保持队形

耶鲁公开课 - 古希腊历史简介课程节选

You know, one famous tactic is--if you have an infantry force coming forward, you send tanks in it to break up the line of the infantry, so that you can defeat the infantry in that way.

最有名的战术是,如果有敌方步兵逼近,你把坦克派过去,破坏他们的步兵阵型,以这种策略对付步兵

耶鲁公开课 - 古希腊历史简介课程节选

The U.S. Marines are beefing up patrols now, sending out Marine infantry -- that means on foot -- patrolling from neighborhood to neighborhood, hoping to quell the problems.

CNN: Martin Savidge: Public might not trust ex-police

North and west, the Bosnian Serbs are on the defensive for the first time, swept aside by Croat artillery, Bosnian army infantry -- and an air force courtesy of NATO.

CNN: Ground offensive could threaten peace process

After rescuing the woman, Carter's unit -- the 3rd Battalion, 7th Infantry Regiment of the 3rd Infantry Division -- took control of the bridge and the whole town, Hindiya, within a matter of hours.

CNN: 'We've got to get her off that bridge'