21 April 1918
War in the Air
Baron Manfred von Richthofen is shot down and killed during a duel with the Canadian Captain Roy Brown, flying a Sopwith Camel.
How to cite this article: Rickard, J (3 January 2018), 21 April 1918, http://www.historyofwar.org/firstworldwar/daybyday/1918_04_21.html