The Biography of Lt. E.G. Leake MC states the following of 2nd Lt. Upfill...

"On the 25th March 1918 Lt E.G. Leake and 2nd Lt. T.H. Upfill, flying with 59 Squadron, took off at 11,00 hours in a 'RE8' aircraft No. B6656, on a Patrol mission over the Loupart Wood area sustaining damage to their aircraft - they both returned OK. On the 28th March R.A.F. losses were high, but this was sustained mostly by ground fire rather than in air battle Lt. E.G. Leake and 2nd Lt. T.H. Upfill, flying with 59 Squadron, took off at 06.00 hours in a 'RE8' aircraft, No.D4686 on a Patrol mission over the Collincamp area when they were machine gunned by an EA and subsequently crashed, their aircraft being destroyed - they both returned OK."

source