Weeks later, on 30 May, Marseille performed another mercy mission after witnessing his 65th victory—Pilot Officer Graham George Buckland of No. 250 Squadron RAF—strike the tail plane of his fighter and fall to his death when the parachute did not open. After landing he drove out to the crash site. The P-40 had landed over Allied lines but they found the dead pilot within German territory. Marseille marked his grave, collected his papers and verified his identity, then flew to Buckland's airfield to deliver a letter of regret. Buckland died two days before his 21st birthday.