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 all we mean by constructive interference is that literally those two waves add together, such as the maxima are now twice as high, and the minima are now twice as low.

相干相长，相干相长也就是,说两个波加在一起，所以最大值变成2倍那么高，最低值变成2倍那么低。

麻省理工公开课 - 化学原理课程节选

I mean, you're into the ballgame for an alphabet such as ours.

我是说,你进入了一个字母表的游戏中,这种字母表与我们的类似

耶鲁公开课 - 古希腊历史简介课程节选