The Bankstown Sub Branch was formed on 17 September 1928 by twenty-six (26) returned servicemen from the 1914-1918 war.

During the early years, the club enjoyed a very enthusiastic membership but lacked monetary support which was mainly brought about by the depression and most members being unemployed. However, membership increased during the thirties and back then, meetings were held in members' homes, various halls, picture theatres, shops and offices.

The Sub Branch found its first “real” home when it acquired the Parish Hall in Kitchener Parade. This came about by the contribution by prominent Bankstown citizen, Harry Maxwell. After a short while it became evident that the hall was reaching its limit so a decision was made to erect a club room at the rear of the hall.

The continual growth of the club was also helped along by the formation of the Women's Auxiliary which was formed shortly after the Sub Branch and whose members worked in close harmony assisting at all functions and contributing substantially to the finances of the Sub Branch. The purchase of the Parish Hall became possible not only by the support of Harry Maxwell but also by the financial support of the Auxiliary.

During the war, membership steadily increased with second war veterans and during 1945/46 the club enjoyed an influx of membership with the demobilisation of the armed services. Membership grew from several hundred to something like 1600.

During the latter part of 1954, legislation was proposed to amend the Liquor Act to allow clubs to apply for a Liquor Licence. The constitution of the Sub Branch was not acceptable to the Licensing Court so it became necessary to form a separate club from the
Sub Branch.

The Bankstown RSL Club was established on 16 February 1955 and a liquor licence was obtained in May of that year with the club commencing operations on 15 May. The Club took over the social activities of the Sub Branch and soon began expanding. The new club was expanding

so much that in 1958 the Board of management looked at building new premises which commenced in January 1960 and were completed in March 1961 with further extensions being made in the early 70's which included a heated swimming pool, squash courts, gymnasium, sauna, lounge room and members' lounge. Members also enjoy many sub clubs within the Club like the golf club, a junior soccer club, junior cricket club, billiard and snooker club and in the early 60's there was also a bowling club. Currently Bankstown RSL Club Ltd has approximately 11,500.