A stratocracy (), also called stratiocracy, is a form of government headed by military chiefs. The branches of government are administered by military forces, the government is legal under the laws of the jurisdiction at issue, and is usually carried out by military workers. The word stratocracy first appeared in 1652 from the political theorist Robert Filmer, being preceded in 1649 by stratokratia used by Claudius Salmasius in reference to the newly declared Commonwealth of England. John Bouvier and Daniel Gleason describe a stratocracy as one where citizens with mandatory or voluntary military service, or veterans who have been honorably discharged, have the right to elect or govern. The military's administrative, judicial, and/or legislative powers are supported by law, the constitution, and the society. It does not necessarily need to be autocratic or oligarchic by nature in order to preserve its right to rule. The political scientist Samuel Finer distinguished between stratocracy which was rule by the army and military regimes where the army did not rule but enforced the rule of the civil leaders. Peter Lyon wrote that through history stratocracies have been relatively rare, and that in the latter half of the twentieth century there has been a noticeable increase in the number of stratocratic states due to the "rapid collapse of the West European thalassocracies". The Diarchy of Sparta was a stratocratic kingdom. From a young age, male Spartans were put through the agoge, necessary for full-citizenship, which was a rigorous education and training program to prepare them to be warriors. Aristotle describes the kingship at Sparta as "a kind of unlimited and perpetual generalship" (Pol. iii. 1285a), while Isocrates refers to the Spartans as "subject to an oligarchy at home, to a kingship on campaign" (iii. 24). One of the most distinguished and, perhaps, long-lived examples of a stratocratic state, is Ancient Rome, though the stratocratic system developed over time.