Enlist In The Army
Enlist
noun, する verb
Enter into a squad... an army squad. When you do this, you enlist in the army.
にゅうたい
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
日本人男性がアメリカ軍に入隊することはできますか。
Can a Japanese man enlist in the U.S. army?