During World War II, the Allied Forces used Cairns as a staging base for operations in the Pacific, with United States Army Air Forces and Royal Australian Air Force operational bases (now the airport), as well as a major military seaplane base in Trinity Inlet, and United States Navy and Royal Australian Navy bases near the current wharf. Combat missions were flown out of Cairns in support of the Battle of the Coral Sea in 1942. Edmonton and White Rock south of Cairns were major military supply areas and U.S. Paratroopers trained at Gordonvale and the Goldsborough Valley. A Special Forces training base was established at the old "Fairview" homestead on Munro's Hill, Mooroobool. This base was officially known as the Z Experimental Station, but referred to informally as "The House on the Hill".