This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (November 2016) (Learn how and when to remove this message)

Ground combat: The Battle of Gettysburg by Thure de Thulstrup, depicting the Union Army and Confederate Army clashing during the American Civil War, 1863

Naval combat: Sinking of the Esmeralda during the Battle of Iquique by Thomas Somerscales, depicting the Peruvian Navy ironclad Huáscar sinking the Chilean Navy corvette Esmeralda during the War of the Pacific, 1879

Aerial combat: An Imperial Japanese Navy Mitsubishi G4M on fire after being shot down by a United States Navy Consolidated PB2Y Coronado during World War II, 1944

Combat sports: Two Irish Defence Forces members hitting each other during a military-sanctioned boxing championship, 2014

Combat is a purposeful violent conflict between multiple combatants with the intent to harm the opposition. Combat may be armed (using weapons) or unarmed (not using weapons). Combat is resorted to either as a method of self-defense or to impose one's will upon others. An instance of combat can be a standalone confrontation or part of a wider conflict, and its scale can range from a fight between individuals to a war between organized groups. Combat may also be benign and recreational, as in the cases of combat sports and mock combat.

Combat may comply with, or be in violation of, local or international laws regarding conflict. Examples of rules include the Geneva Conventions (covering the treatment of people in war), medieval chivalry, the Marquess of Queensberry Rules (covering boxing), and the individual rulesets of various combat sports.