Attack units were specialized computers used by the Eminians and Vendikans in the interplanetary war that existed between their two planets, Eminiar VII and Vendikar.

These attack units were activated in order to launch an immediate counter attack during the Eminiar-Vendikar War. When Spock observed this procedure, while held in the war room on Eminiar VII in 2267, he determined that their war was fought totally with computers. (TOS: "A Taste of Armageddon")