Gravestone

Front face:

- smart, military
Top: RFC badge or roundels or union jacket or knight on winged horse?
Royal Flying Corp
13 April 1912 - 1 April 1918
Per Ardua at Astra

Back face:

More ravaged by war
No of people served
No killed
No invalided out
Killed in action vs in training
Pilot's average life expectancy in days
Conscripts vs volunteers
Pilots vs ground crew vs "staff"