"1968Z"^^ . "Australian soldier" . . "1916Z"^^ . . . "1916Z"^^ . . . . "Cedric Bassett Popkin"@en . . "Cedric Bassett Popkin (1891\u2013January 1968) is considered the person most likely to have killed German ace Manfred von Richthofen \u2014 also known as the \"Red Baron\" \u2014 on 21 April 1918. Popkin was an anti-aircraft (AA) machine gunner with the First Australian Imperial Force (AIF), during World War I."@en . "Popkin, Cedric Bassett"@en . . "1891Z"^^ .