garrison
US /ˈɡer.ə.sən/
UK /ˈɡer.ə.sən/

1.
驻军, 守备部队
the troops stationed in a fortress or town to defend it
:
•
The garrison was prepared for a long siege.
驻军已为长期围困做好准备。
•
A small garrison held the fort against overwhelming odds.
一支小驻军在寡不敌众的情况下守住了堡垒。