The Coast Guard provides law and maritime safety enforcement, marine and environmental protection, and military naval support. The Marine Corps is an immediate response force that can be used to overwhelm the enemy. The Marine Corps maintains ready expeditionary forces, sea-based and integrated air-ground units for contingency and combat operations, and the means to stabilize or contain international disturbance. Air Force crews annually fly missions into all but five nations of the world. It routinely participates in peacekeeping, humanitarian, and aeromedical evacuation missions. The Air Force provides a rapid, flexible, and when necessary, lethal air and space capability that can deliver forces anywhere in the world in less than forty-eight hours. The Navy is America's forward deployed force and is a major deterrent to aggression around the world. The Navy maintains, trains, and equips combat-ready maritime forces capable of winning wars, deterring aggression, and maintaining freedom of the seas. The Army is the largest and oldest branch of the military. The Army also provides logistics and support to other branches. It does so through providing forces and capabilities for sustained combat and stability operations on land. The Army defends the land mass of the U.S., its territories, commonwealths, and possessions. Here are some brief descriptions of the branches. In addition, our nation is also served by the National Guard and the Merchant Marine (described in the Active Duty vs.

Each branch of the military has a Reserve component. The Coast Guard is housed under the Department of Homeland Security during peacetime and can serve as part of the Navy's force during times of war. Each branch is headed by a military 4-star general or admiral (i.e., Army Chief of Staff, Air Force Chief of Staff, Chief of Naval Operations, and Commandant of the Marine Corps) and these individuals are collectively known as the Joint Chiefs of Staff. Each department within the DOD is headed by its respective Secretary (e.g., the Secretary of the Army), civilians appointed by the President. The DOD is headed by The Secretary of Defense, a civilian appointed by the President. As shown in the graphic below, the Army, Navy, Air Force, and Marines are housed under the Department of Defense (DOD). The US military has five branches: the Army, Navy, Air Force, Marines, and Coast Guard.

Do all branches of military have tanks?