The pilot, Lt Walter John Pitt-Pitts (British) was also killed. S. L.
Musgrove wounded and PoW in D-8416, DH4; Missing from photography. Lt WJ Pitt-Pitts KIA, 2Lt HS Musgrove wounded, PoW.
I could find nothing of his post-war repatriation. It's possible he died of his wounds.
Musgrove, Harold Stone (Second-Lieutenant)
Prisoner of War 1918-August-09

Birth Date: 1896-November-22
Born:
Parents: John T. & Hugina R. Musgrove
Spouse:
Home: Calgary, Alberta.
Enlistment: Calgary, Alberta
Enlistment Date: 1915-August-17
Service
RAF
Unit
57 (BR) Sqn- Squadron (RAF)
Corpus Non Animum Muto I change my body, not my spirit
Base
France
Rank
Second-Lieutenant
Position
air gunner
Service Numbers
540079