is a state of conflict
between relatively large groups of people (such as nations
, social groups
), which is characterized by the use of armed lethal violence
or upon civilians
. Other terms for war, which often serve as euphemisms
, include armed conflict, hostilities, and police action
A common perception of war is a series of military campaigns between at least two or more opposing sides involving a dispute over sovereignty, territory, resources, ideology or a host of other issues. A war to liberate an occupied country is sometimes characterised as a "war of liberation", while a war between internal elements of the same state may constitute a civil war.
Aside from humans and their primate brethren, ants are the only other species known to exhibit such behavior on a large scale.
A battle is a single engagement fought between two or more parties, wherein each party or aligned group will seek to defeat their opponent. Battles are most often fought during military campaigns and can usually be well defined in time, space and action. Wars are generally the continuum of a related series of battles and are guided by strategy, whereas individual battles are the stage on which tactics are employed.
Military history is the recording and analysis of those events in the history of humanity that fall within the category of organised armed conflict, and that relate to the institutions and organizations that prosecute such conflict.
The Battle of Savo Island took place August 8–August 9, 1942, and was a naval battle of the Pacific Campaign of World War II, between the Imperial Japanese Navy and Allied naval forces. The battle was the first of five major naval engagements of the Guadalcanal campaign. In the battle, a Japanese warship task force surprised and routed the Allied naval force, sinking one Australian and three American cruisers, while taking only moderate damage in return. The Japanese force consisted of seven cruisers and one destroyer, commanded by Vice Admiral Gunichi Mikawa. In response to Allied amphibious landings in the eastern Solomon Islands, Mikawa brought his task force down "the Slot" to attack the Allied amphibious fleet and its screening force. The screening force consisted of eight cruisers and fifteen destroyers, commanded by British Rear Admiral Victor Crutchley, but only five cruisers and seven destroyers were actually involved in the battle. As a result of the defeat, the remaining Allied warships and the amphibious force withdrew from the Solomon Islands. This temporarily conceded control of the seas around Guadalcanal to the Japanese. Allied ground forces had landed on Guadalcanal and nearby islands only the day before. The withdrawal of the fleet left them in a precarious situation, with barely enough supplies, equipment, and food to hold their beachhead.