Interservice rivalry is a military term referring to rivalries that can arise between different branches of a country's armed forces, such as between a nation's land forces (army) and naval forces. The armed forces of a state are its government sponsored defense and fighting forces and organizations. ... Army (from French armée) can, in some countries, refer to any armed force. ... The multinational Combined Task Force One Five Zero (CTF-150) The British Grand Fleet, the supreme naval force of WW1 A rare occurrence of a 5-country multinational fleet, during Operation Enduring Freedom in the Oman Sea. ...

Such rivalries are often seen as negative influences on the effectiveness of a country's armed forces. For example, the U.S. Department of Defense was originally created to provide overall coordination for the various branches of the U.S. armed services, whose infighting was seen as detrimental to military effectiveness during World War II. The United States Department of Defense, abbreviated DoD or DOD and sometimes called the Defense Department, is a civilian Cabinet organization of the United States government. ... Combatants Allies: Poland, British Commonwealth, France/Free France, Soviet Union, United States, China, and others Axis Powers: Germany, Italy, Japan, and others Casualties Military dead: 17 million Civilian dead: 33 million Total dead: 50 million Military dead: 8 million Civilian dead: 4 million Total dead: 12 million World War II...

In some ways, however, interservice rivalries can encourage positive outcomes, such as improving the esprit de corps of a given branch of the military. Morale measures the degree to which people hold to belief. ...

See also

• Army-Navy Game
• National Security Act of 1947
• Goldwater-Nichols Act
• Revolt of the Admirals
• Contrast with joint warfare