noun
army and navy
Refers to both the army and navy as a combined military force. Often used in historical or organizational contexts.
戦前の日本では、陸海軍が大きな力を持っていた。
In prewar Japan, the army and navy held great power.
Compound of 陸 (land) + 海 (sea) + 軍 (military), literally 'land-sea military'.