[PvK]

At the _very_ first, just to get started, recruit many of the reasource-cheapest units for earliest expansion (maybe mainly just for the provinces adjacent the capital). IIRC it is the Ranger Crossbowmen who can be recruited so quickly it doesn't matter if they die. Then start to work up to the higher-resource units with longer life expectancy. Secure the provinces adjacent the home province ASAP to get the resources for the better-equipped troops.

PvK