about 4 years ago - Silmaril - Direct link
They do the latter as depending on the one/s you have won will add Battalions or Platoons to your existing Unit type, all you do is click them and they join your existing Units in your Barracks.  
about 4 years ago - Solanix - Direct link
@Elivar until they're used up in the battles :)  
about 4 years ago - Solanix - Direct link
@Elivar it depends of how big your squad size is :)