High Quality Content by WIKIPEDIA articles! The 8th/12th Regiment, Royal Australian Artillery, was formed at the Holsworthy Barracks on 16 November 1973 through amalgamation of the 8th Medium Regiment (RAA) and the 12th Field Regiment (RAA). The Regiment provides field artillery support to the 1st Brigade based in Darwin. It is currently equipped with 155 mm M198 howitzers