宇宙帽[uchuubou] space helmet
烏帽子[eboshi] black-lacquered headgear (made of silk, cloth or paper) originally worn by court nobles in ancient Japan, and afterwards spreading to the common people
夏帽子[natsuboushi] summer hat
角帽[kakubou] mortarboard
学帽[gakubou] school cap

軍帽[gunbou] military cap
三角帽[sankakubou] three-cornered hat
制服制帽[seifukuseibou] cap and uniform
制帽[seibou] regulation cap
正帽[seibou] cap of a uniform

一軍[ichigun] an army
１等軍曹[ittougunsou] sergeant first-class
一泊行軍[ippakukougun] an overnight march
援軍[engun] reinforcement
海軍[kaigun] navy

凱旋軍[gaisengun] returning victorious army
救世軍[kyuuseigun] Salvation Army
共産軍[kyousangun] communist army
郷軍[gougun] veteran
空軍[kuugun] Air Force