There are a total of six different combat units – troops – available for recruitment in Stronghold Kingdoms:

 
Armed Peasant
– The first unit you have access to
 
 

 
Archer
– The first and only ranged unit in the game
 
 

 
Pikeman
– A defensive melee unit with strong armor
 
 

 
Swordsman
– An aggressive melee unit with high damage
 
 

 
Catapult
– The only siege engine in the game, useful for knocking down Stone Towers
 
 

 
Captain
– The most powerful of melee units, good offense/defense but limited and very expensive