The First attack on Bullecourt (11 April 1917) was a military operation on the Western Front during the First World War. The 1st Anzac Corps of the British Fifth Army attacked in support of the Third Army, engaged in the Battle of Arras (9 April to 16 May 1917) further north. The Report of the Battles Nomenclature Committee (1921) called operations subsidiary to the main Battle of Arras the Flanking Operation to the Arras Offensive.