If you take the road of the military you're going to have to fight a lot. Back in the day, this involved learning martial arts to fight with. Remember, just wax off.
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.
There are many Japanese people who don’t have any experience in martial arts.
Koichi has no equal in martial arts.
I’ve become unable to keep up martial arts because of a frozen shoulder.