In what year was the RAF founded?

The Royal Air Force (RAF) was founded in 1918, specifically on April 1st. This date marked a significant moment in military history, as it was the first independent air force in the world, established in the aftermath of World War I to provide effective air support for the British Army and the Royal Navy.

The foundation of the RAF represented a shift in military strategy, emphasizing the importance of air power in warfare. The establishment in 1918 allowed for the integration of aviation into all aspects of military operations, setting the stage for the development of modern air forces.

The other years mentioned in the options do not correspond to the formation of the RAF; 1914 is prior to its founding and relates more to the early stages of World War I, 1920 is after the RAF was established but is not a significant year in its founding history, and 1939 marks the beginning of World War II, which was a vastly different context for air forces.