軍
ぐん · gun · JLPT N3 · noun
army
🪖 冖 cover + 車 chariot = chariots in a ring: an army. Read gun, and armies carry guns
The 冖 on top was originally a sign for encircling, and 車 below is a war chariot. Chariots drawn up in a ring meant a camp of troops. The reading ぐん (gun) is a handy sound hook, since armies carry guns.