noun
military nerd; war nerd
Slang term for someone deeply obsessed with military topics, equipment, or history, often to a geeky degree.
彼はミリタリーオタクで、戦車の名前を全部言える。
He's a military nerd and can name every tank.
Variant with interpunct, sometimes used for clarity.
Compound of English loanword ミリタリー (military) and オタク (otaku, geek).