they are 400 indep sl btry 51 Northamptonshire reg RA ta, somewhere in Italy in 1943, I'd love to know what the vehicle markings ment, i know 400 battery where sent to north africa in january 43 with the 30 surrey sl reg, then after being in algers and tunisia they whent to italy later in 43 but not sure who with? as searchlight seemed to be in short supply and seem to have been split up? (my dads in the top pic 3rd from left sitting on the step in vest).