A Sassanid camp in 10mm – Camels at an oasis
Their Roman opponents, baggage animals in train with foot guards (sorry about the crap photo)
Both 6cm square – for Impetus.
And a bit later 15mm early middle ages Welsh – travel light – flock of sheep
10cm square – for Impetus.
And if you want to go mad
which is somewhere in a box and I can’t remember the dimensions – but not ‘that’ big honest.