noun
military book; war history
Refers to books on military strategy, tactics, or historical accounts of warfare. Often used for classical Japanese war tales or Chinese military classics.
彼は軍書を読んで戦略を学んだ。
He studied strategy by reading military books.
この軍書には、昔の合戦の様子が詳しく書かれている。
This war history describes old battles in detail.