5th Divisional Artillery

14th Brigade C.F.A.

55th Battery

61st Field Battery

Lt A.G. Virtue

IWM HU 91047: Airco DH 4 flying over a heavily-shelled area south of the River Scarpe near Biache-Saint-Vaast (upper right), east of Arras, 21 March 1918.

Aeroplane: AirCo / de Havilland DH 4
Engine: Rolls Royce Eagle III or Eagle IV
Power: 250 hp
Crew: 3
Wing span: 42ft 5 5/8in
Length: 30ft 8in
Height: 10ft 1in
Tare Weight: 2,197-2,387lb
All-up Weight: 3,313-3,472lb
Max Speed: 106-143mph
Service Ceiling: 16,000-22,000ft
Endurance: 3.5-4.5 hours 
Armament: One forward firing Vickers Gun, one flexible Lewis Gun. 
Max Bomb-load: 460lb