Frederick enlisted in Tasmania and served in 40th Battalion. He was killled on 5 October 1917 during the Messines Offensive while serving in France/Belgium. In all likelihood he served in John Monash's Division. See Scrapbook for his memorial details taken from the Australian War Memorial website.
Since writing the above, I have found his Service record in the National Archives - a copy is on this computer. He enlisted on 12 February 1916. The record shows he was 5'10" tall and weighed 147 pounds and that he had fair hair and blue eyes.
His enlistment papers indicate he had five children, yet there are six listed in the pension papers in his Service Record. Perhaps his wife was pregnant when he left home.