noun
war preparation; preparations for war
Refers to military buildup, mobilization, or readiness activities before or during a conflict.
その国は戦争準備を進めている。
That country is proceeding with war preparations.
戦争準備には莫大な費用がかかる。
War preparations require enormous expenses.
軍備 refers more broadly to armaments and military strength, while 戦争準備 emphasizes the active process of getting ready for a specific war.
Compound of 戦争 (war) and 準備 (preparation).