Defense organizations are entities that focus on the protection and security of a nation. They encompass a wide range of military and civilian agencies, including the Department of Defense in the United States, which oversees the armed forces and coordinates national defense strategies. These organizations play a crucial role in maintaining peace and responding to threats, both domestic and international. In addition to military branches, defense organizations also include intelligence agencies like the CIA and NSA, which gather and analyze information to inform national security decisions. Their efforts ensure that countries can effectively respond to various challenges, from terrorism to cyber threats, safeguarding citizens and national interests.