Pretty sure the new Lancashire range will be 18mm, so the old range OB linked to is probably closer. I have their 15mm Naps and they match Minifigs ok enough.
Minifigs has Russian guerrillas too, can't remember how Russian they look. For polearms and farm implements, Lancashire used to have peasants with such in their medieval 15mm range, may still be there. Museum has civilians with farm implements in their ECW range too, which might be the clothes at least a bit closer in time.