Battle Dress, was the combat uniform worn by British, many Commonwealth an Empire forces and many Free European Forces through the Second World War, mostly but not exclusively in temperate climates. In some armies it continued in use into the 1970's. During the Second World War and thereafter this uniform was also used for formal parades (incuding mounting the Queen's Guard at Buckingham Palace) until the re-introduction of separate parade uniforms. The Battle Dress Uniform (BDU) was the combat uniform of United States forces through the late 20th Century.