noun
rear guard; reserve troops
Military term for troops positioned at the rear, either as a guard or as a reserve force. Used in historical or strategic contexts.
後陣を固めて敵の追撃に備えた。
They strengthened the rear guard to prepare for the enemy's pursuit.
後陣の部隊はまだ戦闘に参加していない。
The reserve troops have not yet joined the battle.