Attrition is a limited-time gamemode introduced to Tom Clancy's Rainbow Six Siege in the Operation Steel Wave expansion. Playable in the Arcade playlist, the mode was available from July 9, 2020 to July 13th, 2020.
The mode is a variant of Bomb and is only available on Clubhouse, Consulate, and Coastline. Unlike the standard gamemode, all operators on the team that wins a round are banned from use on subsequent rounds. All operators are unlocked for use at the start of each match. Additionally, the gamemode has the same rules as an Unranked matched except for the lack of pick-and-ban.