It could mean the soldier himself. It could mean things given to soldiers when they joined the military such as weapons, equipment or clothes.

它可以表示士兵，也可以表示士兵入伍时领到的东西，如武器、装备或军服。

youdao

All of the participants were free of depression when they were recruited to the study, and each filled out a 136-item food frequency questionnaire when they joined.

调查开始时所有参与者都无抑郁表现，他们被要求完成一份关于136种食物食用频率的问卷。

youdao

And the Philistines put themselves in array against Israel: and when they joined battle, Israel was smitten before the Philistines: and they slew of the army in the field about four thousand men.

非利士人向以色列人摆阵。两军交战的时候，以色列人败在非利士人面前。非利士人在战场上杀了他们的军兵约有四千人。

youdao

It could mean the soldier himself. It could mean things given to soldiers when they joined the military such as weapons,equipment or clothes.

VOA: special.2010.03.07

And when they were acquitted, only two people who were condemned from those forces, they had joined voluntarily and the others, the malgre-nous were, "In spite of ourselves," Were pardoned.

当他们被无罪释放的时候,那个军队里,只有两个人被判刑,他们是自愿加入的不过其他人,那些"不情愿的","不情愿的人"被赦免了

耶鲁公开课 - 1871年后的法国课程节选

When they joined the revolution, they were already proficient in the use of small- and medium-sized weapons.

BBC: Covert help for Syria's rebels in Jordan

When they joined the company they knew what they were signing up for.

FORBES: What Brands Can Learn From Pan Am--The Airline And The Show

Even though they were not yet citizens when they joined our military, these men and women signed up to serve.

WHITEHOUSE: Building a 21st Century Immigration System