Armament, Armed
Noun, する verb, and の adjective
ぶそう
どうやら、武装勢力に襲われたようだ。
It seems that they were attacked by armed insurgents.
The most important part of your military attire are your arms (not the ones attached to your body, your guns and stuff). Arms are what make you a real military person.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.