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 civilian fashions of the time. Frock Coat Dress was (like Full Dress) placed in abeyance and 'landed' in 1939, and although not formally abolished was not worn until it was finally abolished in 1949. A modified version of this uniform is still worn; usually with peaked cap and without epaulettes, by the Master and Elder Brethren of Trinity House. This was not introduced until comparatively late in World War Two, in contrast to its Army and RAF equivalents. From 1941, Army battledress was approved for use by Royal Navy personnel until 1943, when a Navy Blue version of battledress was