Air commodore is never shortened to Commodore, which is a rank in various naval forces. Air commodore is a one-star rank and the most junior air officer rank, being immediately senior to group captain and immediately subordinate to air vice-marshal. It has a NATO ranking code of OF-6 and is equivalent to a commodore in the Royal Navy or a brigadier in the British Army or the Royal Marines. Unlike these two ranks, however, it has always been a substantive rank. Additionally, air commodores have always been considered to be air officers whilst Royal Navy commodores have not since the Napoleonic Wars
Henry Osborn (Royal Navy officer) Henry Osborn (Royal Navy officer) Admiral Henry Osborn (baptized 27 August 1694 – 4 February 1771) was a British naval officer who served as Commodore-Governor of Newfoundland. He was a younger son of Sir John Osborn, 2nd Baronet. Osborn joined the Royal Navy as a volunteer in 1710. He was promoted lieutenant in 1717, and his first command was HMS "Squirrel" in 1728. On 14 May 1729, Osborn was appointed the first commodore-governor of Newfoundland, when Lord Vere Beauclerk, the naval commander of Newfoundland had declined. He visited all of the notable places on the island and divided it into