Air commodore unification of the Canadian Forces in 1968, when army-type rank titles were adopted. An air commodore then became a brigadier-general (following the US Armed Forces title, rather than the British brigadier, which had been held by equivalent officers in the former Canadian Army). In official French Canadian usage, the rank title was "commodore de l'air". The position of honorary air commodore still exists in the Royal Canadian Air Cadets. Air Commodore, a calque or near-literal translation is also a rank in the Egyptian Air Force, Royal Air Force of Oman, the Royal Thai Air Force and the Air Force of
History of the Royal Navy to launch aircraft with landings in the sea. The first purpose-built aircraft carrier was HMS "Argus", launched in 1918. The Royal Navy was also heavily committed in the Dardanelles Campaign against the Ottoman Empire. During the war, the Navy contributed the Royal Naval Division to the land forces of the New Army. The Royal Marines took part in many operations including the raid on Zeebrugge. Energy was a critical factor for the British war effort. Most of the energy supplies came from coal mines in Britain. Critical however was the flow of oil for ships, lorries and industrial use. There