This volume details the Royal Flying Corps and the Royal Naval Air Service from formation in 1912 until the amalgamation on 1st April 1918. It also covers the Women's Auxiliary Army Corps and Women's Royal Naval Service attached as drivers and mechanics, for example, to the two services. The book covers uniforms and insignia in the UK, on the Western Front and in the Mediterranean and Middle East including a huge number of variations from full dress to working fatigues.