Breguet 14 B2, two-seat day bomber biplane.

One of many! A dead French pilot in the cockpit of his downed Salmson 2A2 airplane 1917
Morane-Saulnier_N_with_fixed_machine_gun_at_Breuil-le-Sec_aerodrome_2_Feb_1916
Salmson SAL 2-A2, two-seat reconnaissance and day bomber
European Center of Military History (EUCMH)