Support Units are non-combatants that do not fight either being extremely ill suited to combat or completely unable to attack enemy units. Despite their lack of utility in combat they are essential for any civilization, as they often act as the primary gatherers for your civilization. Some are even brought into combat to provide battlefield healing, maintaining the strength of expensive units and keeping your army alive much longer. Some units such as Cavalry Swordsman are extremely effective at harassing and killing support units, and it would be wise to use them for quick raids against vulnerable healers, traders and female citizens.