In your first contract, you will have a tutorial on how to use swords, horses, 
and bows. When it tells you to use the Bowmen, do not take control of them. 
Instead, use the Swordsmen to fight the groups of people. After fighting for 
about a minute, you should gain a level. You can do this as long as desired to 
better your men, making the beginning of the game easier. You can switch to the 
Horsemen to also increase their levels. Once you have their levels where 
desired, switch to the Bowmen to finish the tutorial.