Harold John Walkerdine was wounded in action on 11 April 1918.
Military Cross (MC)
T./2nd Lt. Harold John Walkerdine, Gen. List and R.F.C.
For conspicuous gallantry and devotion to duty. Whilst escorting machines of another squadron, who were engaged on low bombing work, he encountered ten hostile scouts, two of which he succeeded in crashing to earth. He has at all times, by his conspicuous skill and gallantry, set an excellent example to his squadron.
Supplement to the London Gazette, 13 May 1918 (30681/5704)