The mission of the Commissariat Museum is to educate the public by promoting the history of Queensland, ultimately preserving its history for current and future generations. The RHSQ was founded in 1913 as a cultural organisation, operating voluntary, as a non for profit, which exists for the benefit of its members and the community. It aims to promote interest in and advance the study of the history of Queensland, the former Colony of Queensland, and the adjacent islands of the Pacific. As well as, broaden opportunities for the practice and writing of history, and preserve objects, art, documents, manuscripts, photographs, charts, and maps relating to the history of Queensland.