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
History of the Royal Navy on 10 September 1813. The British Army, along with militia and Indian units, was now cut off from supplies and retreated eastward. They were caught and defeated at the Battle of the Thames on 5 October 1813, which gave Americans the control over western Ontario, and destroyed the Indian alliance the British Army had depended upon. In 1814 the British Army, bringing in veteran units from the Peninsular War, launched a major invasion of New York State under General Sir George Prévost. However, the supporting Royal Navy vessels on Lake Champlain were sunk by the American fleet at the Battle