noun
close combat; close-quarter fighting; in-fighting
Used in military, martial arts, and gaming contexts for fighting at very short range.
接近戦ではナイフが有効だ。
In close combat, a knife is effective.
このゲームは接近戦が苦手なプレイヤーには難しい。
This game is difficult for players who are not good at close-quarter fighting.
Compound of 接近 (close approach) and 戦 (war, battle).