warfare involving physical combat instead of weapons / (figuratively) activity involving large amounts of physical contact, especially sports

battle of the brains

A kind of chicken fight: a Japanese game, in which one person “rides” on top of a group of supporters while wearing a hat or flag, which the person tries to defend, while their team attempts to grab the opposing team's hat or flag.

blitzkrieg (fast military offensive)

psychological warfare

(rare) war bow

(collective, chiefly in compounds) many or all battles

final (match or game to decide the champion of a tournament)

attrition warfare

(sports) a game/match between teams from Waseda University and Keio University