having served one's purpose

(archaic, obsolete) to use, make use of, utilize / (archaic, obsolete) to adopt / (archaic, obsolete) to assign, appoint

self-defense

Kyūjitai form of 当用: general use, current use, daily use

(grammar) declension

see you later (said by a person leaving, a stock phrase required by the Japanese etiquette, lit.: (after) going, I will come back)

run into, hit, strike

carry, take, bring (something)

imperative of 出て行く (deteiku): get out! scram!

a 軍歌 (gunka, “war song”)