Religious war
European wars of religion

The term "religious war" was used to describe, controversially at the time, what are now known as the European wars of religion, and especially the then-ongoing Seven Years' War, from at least the mid 18th century. The Encyclopædia Britannica maintains that " wars of religion of this period fought mainly for confessional security and political gain".

In 16th-century France, there was a series of wars between Catholics and Protestants (Huguenots primarily), known as the French Wars of Religion. In the first half of the 17th century, the German states, Scandinavia (Sweden, primarily) and Poland were beset by religious warfare during the Thirty Years War. Catholicism and Protestantism figured on the opposing sides of this conflict, though Catholic France took the side of the Protestants, but it did so for purely political reasons.

In the late 20th century, a number of revisionist historians such as William M. Lamont regarded the English Civil War (1642–1651) as a religious war, with John Morrill (1993) stating: "The English Civil War was not the first European revolution: it was the last of the Wars of Religion." This view has been criticised by various pre-, post- and anti-revisionist historians. Glen Burgess (1998) examined political propaganda written by the Parliamentarian politicians and clerics at the time, noting that many were or may have been motivated by their Puritan religious beliefs to support the war against the 'Catholic' king Charles I of England, but tried to express and legitimise their opposition and rebellion in terms of a legal revolt against a monarch who had violated crucial constitutional principles and thus had to be overthrown. They even warned their Parliamentarian allies to not make overt use of religious arguments in making their case for war against the king. However, in some cases it may be argued that they hid their pro-Anglican and anti-Catholic motives behind legal parlance, for example by emphasising that the Church of England was the legally established religion: "Seen in this light, the defenses of Parliament's war, with their apparent legal-constitutional thrust, are not at all ways of saying that the struggle was not religious. On the contrary, they are ways of saying that it was." Burgess concluded: "he Civil War left behind it just the sort of evidence that we could reasonably expect a war of religion to leave."
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