[4] Bath, to be known late in his career as 'the Old Fox', was graded as a sixteen-year-old to play for the Brisbane club Southern Suburbs in 1940.

In the 1946 fixture for NSW against the touring Great Britain side he badly injured his leg and so was unavailable for Australian Test selection a week later.

Harry Bath played at second-row and was captain in Warrington's 19–0 victory over Widnes in the 1949–50 Challenge Cup Final during the 1949–50 season at Wembley Stadium, London on Saturday 6 May 1950, in front of a crowd of 94,249, played in the 4–4 draw with Halifax in the 1953–54 Challenge Cup Final during the 1953–54 season at Wembley Stadium, London on Saturday 24 April 1954, in front of a crowd of 81,841, and played at second-row, and scored a conversion in the 8–4 victory over Halifax in the 1953–54 Challenge Cup Final replay during the 1953–54 season at Odsal Stadium, Bradford on Wednesday 5 May 1954, in front of a record crowd of 102,575 or more.

Bath played at second-row in Warrington's 8–14 defeat by Wigan in the 1948–49 Lancashire Cup Final during the 1948–49 season at Station Road, Swinton on Saturday 13 November 1948,[7] and played at second-row in the 5–28 defeat by Wigan in the 1950–51 Lancashire Cup Final during the 1949–50 season at Station Road, Swinton on Saturday 4 November 1950.

Bath returned to Australia in 1957 and joined St. George after his former club Balmain decided against a signing due to his age of 33.

It has been suggested that Bath was punished by the Australian selectors for the ten years he spent in the English league.

However he was 33 years old when he returned to Australia for his last three seasons and he was then competing for a representative position against star players Norm Provan and Rex Mossop.

He was selected manager, coach and as the sole selector for the Australian national team's 1962 Ashes series.

He coached the national side in the 1972 World Cup in which they lost to Great Britain in controversial circumstances.

Great Britain were awarded the victory due to a higher points table placing after the pool rounds of the competition.

[11] On 20 July 2022, Bath was named in the St. George Dragons District Rugby League Club's team of the century.

[14] His ashes have been memorialised at Woronora Memorial Park at Henry Lawson Garden Walk, section GWR no.