Airfix 8th Army and Afrika Korps sometime in the early 60s.
Seeing Callan playing wargames on TV (a Secret Agent playing games with toy soldiers! Does it get any better?) in the late 60s alerted me to the fact you could do more with figures than blow them up and shoot them with an air rifle.
Bought ‘Charge!’ by Young and Lawford, in Mortens Bookshop, Sunderland Street Macclesfield August 1972.