The figures in pale trousers are officers. The base on the extreme right appears to have crept in from another set — possibly WWII British Paratroops.
An issue with basing figures but not vehicle models is that the infantry's height is artificially enhanced compared with neighbouring vehicles. That's not really a big issue when it comes to wargaming, but it needs to be taken into account if you want to model vehicles and men together for any reason — gun crews, for example.
