On 2 June 1917, Bishop flew a solo mission behind enemy lines to attack a German-held aerodrome, where he claimed that he shot down three aircraft that were taking off to attack him and destroyed several more on the ground. For this feat, he was awarded the Victoria Cross (VC), although it has been suggested that he may have embellished his success. His VC (awarded 30 August 1917) was one of two awarded in violation of the warrant requiring witnesses (the other being the Unknown Soldier), and since the German records have been lost and the archived papers relating to the VC were lost as well, there is no way of confirming whether there were any witnesses. It seems to have been common practice at this time to allow Bishop to claim victories without requiring confirmation or verification from other witnesses.