I'm currently researching the Pierce Arrow armoured anti-aircraft lorries which mounted a 2 pdr pom-pom, of which 48 were built (not all armed). Aside from this information in 'War Cars' by David Fletcher, I was wondering if anyone had any more information on them and the unit that used them, the Royal Marine Artillery AA Brigade and Royal Garrison Artillery? I'm mainly interested to know the following - one battery stationed near Dunkirk was re-equipped with different vehicles in 1917 (whenabouts?), the other three batteries were taken over by the RGA in 1916 - when abouts in 1916 did this happen, and for how long did they continue to be used for?
Also, any information of the names of the units and where they served would be much appreciated.
