Combatant Commands - U. S. Department of Defense U S Northern Command deters, detects and defeats threats to the United States, conducts security cooperation activities with allies and partners, and supports civil authorities Northcom's top
DoD’s 9 Combatant Commands: What They Are, What They Do Each COCOM has a particular mission, and each may be involved in various operations or exercises (operations are various phases of a war or military engagement; exercises are routine or