A truce is an agreement to end between warring parties to mutually end acts of hostility against eachother for a time period despite the continuation of the war. Soldiers carrying or waving a white flag are not to be fired upon, nor are they allowed to open fire. Attacking a party displaying a white flag of truce or using such a flag as a ruse to attack another party is a war crime.
An unofficial truce occurred during World War I, which is referred to as the Christmas Truce. Soldiers of the Western Front laid down their arms on Christmas Day and met in No Man's Land, exchanging food and cigarettes, as well as playing football.
