[2][3] The 4x2 rear wheel driven chassis had a wheelbase of 14 feet (4.3 m), it had leaf spring suspension and a 4-cylinder petrol engine that delivered 30 horsepower (22 kW).

[3] During their period of employment with the Royal Marine Artillery Anti-Aircraft Brigade from April 1915 to the time they were replaced in service by QF 13-pounder 9 cwt guns in 1917, the Pierce-Arrows claimed over twenty German aircraft shot down.

[2][3] The vehicle's contribution was to force enemy reconnaissance aircraft to fly at much greater altitude of up to 10,000 feet (3,000 m) where they were much less effective.

[2] The No 1 Squadron, Royal Naval Armoured Car Division under Commander Oliver Locker-Lampson had one Pierce-Arrow during their expedition to Russia and the Causasus.

[3] In January and February 1915 the War Office ordered a further 16 armoured AA lorries from Wolseley Ltd for use by the Imperial Russian Army, although these were built on the chassis of a Peerless Motor Company 5-ton truck.