Birth of the aircraft carrier
Between World Wars I & II, fighter planes underwent a great deal of innovation. From the biplanes and triplanes in the “Great War” to the high-speed monoplanes of the late 1920s and 1930s, the world powers made great strides in aviation.
That included the development and introduction of the aircraft carrier, the first of which belonged to the British Royal Navy, the HMS Argus, the first flat-deck carrier which debuted in 1918. The U.S. would not follow suit until 1920.
Putting fighters on carriers was very much experimental throughout the 1920s and did not really reach full operational status until the 1930s.