 The cathedral was dedicated as a memorial to the Battle of the Coral Sea which was fought due east of Cairns from 4–8 May 1942.In November 1969 the Colours of the 51st Infantry Battalion, the Far North Queensland Regiment, were put "to rest" on the wall in the sanctuary of the cathedral.In September 1995 the "Peace Window" was installed to coincide with the Victory in the Pacific celebrations in Far North Queensland, celebrating 50 years of peace in the Pacific.