- Second World War (1939-1945)
- Flying Officer
- No. 419 Squadron, Royal Canadian Air Force (No. 419 Squadron, Royal Canadian Air Force)
- Awarded on:
- January 9th, 1945
'As air bomber, this officer has participated in a large number of bombing missions, many of them against strongly defended targets in Germany. Throughout he has displayed the highest standard of determination and devotion to duty and his excellent work has contributed materially to the successes obtained. On a recent occasion a short circuit in the bombing gear caused a fire to start in the bomb aimer's compartment. Despite this, Flying Officer Arnold coolly directed the bombing run and not until the bombs had been released did he turn his attention towards extinguishing the fire."