Following the Battle of Britain he worked as a controller, helping to direct the RAF’s response to German attacks. At the end of the war, Hemingway served as commander of No. 43 Squadron, which ...

During the Battle of Britain (officially defined as lasting from July through October 1940), he served with RAF No. 253 and No. 85 Squadrons and damaged a Messerschmitt 109 on September 3.