The Pierce-Arrow armoured lorry was a heavy armoured car mounting a QF 3-pounder Vickers gun, it was used by the Royal Naval Air Service during the First World War.

[1][2][3] The Pierce-Arrow had a front mounted engine protected by folding armoured panels, behind the engine was an enclosed driver's compartment a single two armoured shutter, the turret was behind the driver's compartment.

[3] Construction of the two Pierce-Arrow armoured lorries was carried out by W. G. Allen & Sons in Tipton, who used 5⁄8 inch (15.9 mm) armoured plate for the fighting compartment, the turret turntables were manufactured by John Shearman & Co at Newport, Wales, where the RNAS had a depot to service armoured cars.

[1][2][3] Throughout the campaign the Pierce-Arrows provided heavy fire support to the lighter Lanchester armoured cars that made up the bulk of the force.

[1][3] In Russia the weight proved to be too heavy for the chassis so the turrets were removed, and the guns were mounted on a pedestal with a shield, and the hull sides were filled in with flat plates.