In your very 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. When you feel you have their levels high enough, switch to
the Bowmen to finish the tutorial.