2This dictionary of World War I slang was compiled by a Canadian soldier, Lorenso N. Smith. It gives a fascinating contemporary insight into life on the front line. What is surprising for the modern reader is the number of words and phrases that Smith felt the need to define which are now considered unremarkable: these include aerial photography, armoured car, bomb, camouflage, concussion, and crater. This in itself demonstrates how much contemporary English comes from World War I. Also included are many words that do not appear in any other World War I dictionaries.