A war of succession is a war prompted by a succession crisis in which two or more individuals claim the right of successor to a deceased or deposed monarch. The rivals are typically supported by factions within the royal court. Foreign powers sometimes intervene, allying themselves with a faction. This may widen the war into one between those powers.
Wars of succession were some of the most prevalent types of wars by cause throughout human history, but the replacement of absolute monarchies by an international order based on democracy with constitutional monarchies or republics ended almost all such wars by 1900.
Princely rebellion#Terminology
In historiography and literature, a war of succession may also be referred to as a succession dispute, dynastic struggle, internecine conflict, fratricidal war, or any combination of these terms. Not all of these are necessarily describing armed conflict, however, and the dispute may be resolved without escalating into open warfare. Wars of succession are also often referred to as a civil war, when in fact it was a conflict within the royalty, or broader aristocracy, that civilians were dragged into. It depends on the circumstances whether a war of succession is also a civil war in the sense of intrastate war (if it is limited to armed conflict inside one state), or it may be an interstate war (if foreign powers intervene; sometimes called 'international' war), or both. Therefore, names or descriptions of a war may simply depend on one's perspective; for example, Nolan (2008) stated: 'The Williamite War of 1689–1691, sometimes known as the Jacobite War, was a war of succession in England and an international war for or against France for most non-Irish participants. But it was a civil war in Ireland.' Similarly, scholars sometimes disagree whether the 1657–1661 Mughal dynastic conflict (which consisted of several subconflicts, phases, and factions) should be labelled a 'war of succession' or a '(princely) rebellion'.