Jack Cooper was the son of Fred and Florence Cooper. He was born in Fitzroy North on 21 February 1889, and he attended the Alfred Crescent State School in Fitzroy North. In his youth he was a fine cricketer as well as a highly talented footballer, and went on to be a regular player with the Fitzroy Footballers Cricket Club. He worked for the company of Fitzroy Football Club's President, D.J. "Don" Chandler, as a storeman. He and his wife, Margaret Malcolm Cooper, née Fletcher, resided at 38 York Street, Fitzroy North, and had one daughter, Margaret Isabel "Maggie" Cooper, who became a teacher.
Footballer
A somewhat thick-set man at and, Cooper was a champion half-back. Recruited from the local team North Fitzroy Juniors, he played his first senior VFL game for the Fitzroy Football Club against Collingwood on 27 April 1907 at Victoria Park. In his first season, he played 11 matches and scored 1 goal. In 1912, after he had been appointed captain of the Fitzroy senior team,a contemporary report spoke of the tough, speedy, skilful, and tenacious Cooper as follows: He played in the Fitzroy team that won the 1913 premiership by defeating St Kilda 7.14 to 5.13 in the 1913 Grand Final Match; he was one of Fitzroy's best players in that match. He was the Fitzroy club's best and fairest player in both the 1911 and 1914 seasons, and he was the Fitzroy team captain in 1912, and its vice-captain from 1913 to 1915. He also played eight games for Victoria, including the match against South Australia at the Adelaide Oval on 10 August 1912, when he captained the Victorian team that lost to South Australia 9.8 to 6.7. In his career with Fitzroy he played 136 senior games and scored 8 goals. He played his last senior VFL game for Fitzroy on Saturday 11 September 1915, in the 1915 Preliminary Final, that was won by Carlton 6.18 to 5.8.
Dealings with VFL Tribunal
He was reported once in his playing career, in the 14 August 1909 match against Carlton at the Brunswick Street Oval, for charging and striking; he was suspended for 12 weeks. In the 26 June 1915 match against Carlton at the Brunswick Street Oval, a former Fitzroy player, the Carlton centre half-back and team captain Billy Dick, was reported for striking Cooper; Dick was suspended for 10 weeks.
Soldier
Leaving his employment as a storeman, he enlisted in the 8th Battalion of the First AIF on 8 November 1915 and left for France on the troopship Wiltshire on 7 March 1916. In France, Cooper saw action in the Battle of the Somme. He was only in the trenches for a short time when he was so badly gassed that once his immediate discomfort had been dealt with, he was repatriated to England to allow him to recuperate. Having recuperated fully, he played for the Australian Training Units team in the famous "Pioneer Exhibition Game" of Australian Rules football, held in London, in October 1916, just before returning to active service in France. A news film was taken at the match. Most likely through the effects of the gas, Cooper's throat continued to give him a lot of trouble and, once again, he was repatriated to England. Although he was sent to Aldershot for officer training, he never rose above the rank of Lance-Corporal.
