 Large versions of the war flag flown on the warships of countries' navies are known as battle ensigns.In addition besides flying the national standard or a military services' emblem flag at a military fort, base, station or post and at sea at the stern (rear) or main top mast of a warship, a Naval Jack flag and other Maritime flags, pennants and emblems are flown at the bow (front).In times of war waving a white flag is a banner of truce, talks/negotiations or surrender.