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
Simon Williams (Royal Navy officer) Simon Williams (Royal Navy officer) Rear Admiral Simon Paul Williams, is a senior Royal Navy officer who served as Naval Secretary, Assistant Chief of Naval Staff (Personnel) and Flag Officer (Maritime Reserves) from March 2015 to June 2018. Educated at Kingsbridge School, the City University London and the Britannia Royal Naval College, Williams joined the Royal Navy in 1978. After taking charge of the minesweeper , he became Commanding Officer of the frigate in 2001 and of the frigate in 2005. He became Director of Naval Personnel Strategy at the Ministry of Defence in 2008, Commodore of the Britannia Royal