On 27 December Lt. Leffers was shot down .
On 27 December Lt. Leffers was killed in combat with FE - 2b 's of No 11 Squadron RFC , the most likely victors being the crew of Capt .
On 27 December Lt. Leffers was shot down and killed in combat with FE - 2b 's of No 11 Squadron RFC , the most likely victors being the crew of Capt .