Born in Ballarat, Victoria and an Electrical Engineer by occupation, William Robert Brazenor was 27 years and married when enlisted on the 29th of March 1915 in the 23rd Battalion, C Company, Australian Imperial Force, with the rank of Captain and was listed as returned to Australia on the 21st of March 1919. His Unit embarked from Melbourne, Victoria, on board HMAT A14 'Euripides' on the 10th of May 1915. Promoted Lieutenant Colonel from 23rd Battalion on the 2nd of December 1916.
Recommendations (Medals and Awards) Mention in Despatches; Awarded, and promulgated, 'London Gazette' No. 31089 (31 December 1918); 'Commonwealth Gazette' No. 61 (23 May 1919). Mention in Despatches; Awarded, and gazetted, 'London Gazette', second Supplement, No. 30448 (28 December 1917); 'Commonwealth Gazette' No. 57 (18 April 1918). Mention in Despatches; Awarded, and promulgated, 'London Gazette', second Supplement, No. 29890 (2 January 1917); 'Commonwealth Gazette' No. 103 (29 June 1917).

Medals Distinguished Service Order Source: 'Commonwealth Gazette' No. 57 Dated 18th of April 1918 DSO and Bar. 'For conspicuous gallantry and devotion to duty during an attack. He led his battalion successfully, and supervised, under constant machine gun and rifle fire, the consolidation of the captured ground. Next day he led a patrol into "No Man's Land" and made a reconnaissance, with the result that the line was pushed forward another 200 yards. Throughout the operation he did fine work.' Source: 'Commonwealth Gazette' No. 23 Dated 12th of February 1919. Tree No. 423