Reinforce
In the reinforce menu you can choose to whom you can send as many units as you like under the form of an reinforcement.
Your Units will fight in all the battles his Commander fights.
You just click on the ‘Reinforce’ button > ‘Reinforce’ and select the amount of Units. Your ally unit capacity is dependent on his embassy level where your units will stay for the time you are sending them.
Keep in mind that you can't shield if you're reinforcing another player. You can only shield if the player you reinforced send your units home. Also if the reinforced player activates a shield your units are sent home.
