- Second World War (1939-1945)
- Flight Lieutenant
- No. 541 Squadron, Royal Air Force (No. 541 Squadron, Royal Air Force)
- Awarded on:
- May 8th, 1945
"This officer is an able and successful pilot. His record in photographic reconnaissance has been consistently excellent. In December 1944 he completed a survey of an area involving a long period of flying in the face of great danger. Flight Lieutenant Arnold has always been keen to evolve new methods and to improve efficiency as a photographic pilot. Throughout his operational career this officer has inspired his fellow pilots by his keenness and courage and has been a great asset to the squadron."