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
Uniforms of the Royal Navy introduced to be used only by the Royal Navy. Uniforms of the Royal Navy The uniforms of the Royal Navy have evolved gradually since the first uniform regulations for officers were issued in 1748. The predominant colours of Royal Navy uniforms are navy blue and white. Since reforms in 1997 male and female ratings have worn the same ceremonial uniform. RN uniforms have served as the template for many maritime/naval uniforms throughout the world, especially in the British Empire and Commonwealth. The uniforms of the Royal Naval Reserve, Royal Fleet Auxiliary, the Maritime Volunteer Service, the Sea Cadet Corps, the