The Royal Flying Corps (RFC) was a military aviation arm of the British Army before the Royal Air Force was established in 1918. Even though the term Royal Flying Corps is historic now, it still holds significance in aviation history. Some of its synonyms are Royal Air Force (RAF), Air Force, Aerial Service, Aviation Branch of the British Army, and Military Aviation. The RFC was established in 1912 and was a key participant in World War I; it made a significant contribution to the Allies' war effort. The pilots of Royal Flying Corps were known for their bravery and skill, and their work remains a hallmark of aviation history.