How did John McGavock Grider contribute to World War I?

Question

Responses

Grider served in the British Royal Air Force.
Grider served in the British Royal Air Force.

Grider was a combat marine.
Grider was a combat marine.

Grider trained soldiers for the National Guard.
Grider trained soldiers for the National Guard.

Grider organized Red Cross efforts.

Answer 1

Grider organized Red Cross efforts.