The Truce of God was the medieval Catholic Church's attempt to stop bored knights from picking fights with each other and tearing up Europe so badly that crops couldn't be planted and harvested and such. It was in effect in different parts of Europe during the 11th and 12th centuries: one was not allowed to fight during Lent, on certain saints' days, and any week between Wednesday evening and Monday morning, leaving at most three days a week for the knights to fight and the rest of the week for peasants to feel fairly safe in the fields.