Crusades

The Crusades were a series of religious wars led by the Katholian Church during the First Era.

Against the Wood elves
The cause of the crusade against the Wood elves is disputed. Some in Mistral, Vale and Ljosal claim it was simple racial and religious persecution, saying because the Wood elves worshiped their own gods.

In 200 1E, after Lyonesse stormed a convent of Elves, the Council of Ljosal declared war on Lyonesse. With Vale and Mistral refusing to allow Lyon troops to pass through their borders, Lyonesse was forced to rely on naval power. Despite some victories in Ljosal, Lyonesse was eventually pushed back in 210 1E after the Battle of Amerstein.

After Lyonesse's defeat, they were forced to sign the Treaty of Vrede, allowing the Elves of Ljosal as well as Elves in Lyonesse to worship their gods.