An official photo describing the kit of a British infantryman in 1939. Note that the gas mask ('respirator') and anti-chemical warfare cape are parts of the outfit, remnants of WW1 memories. In actual combat, and marching with full kit, the British infantryman would carry a pack known as a "valise" that contained more clothing and personal items. Officers wore the exact same uniform save for markings of their rank.
6.28.1919 - The peace Treaty of Versailles was signed at the end of WWI, ending the state of war between Germany and the Allied Powers five years after the assassination of Archduke Franz Ferdinand. The other Central Powers on the German side of WWI were dealt with in separate treaties. The armistice signed on 11.11.1918, ended the actual fighting, but it took six months of negotiations at the Paris Peace Conference to conclude the peace treaty.