Militias are defensive units created automatically upon the founding of a city. Since militiamen support themselves by holding regular jobs, these units only require half the support that regular units require. Also, the relative readiness of militias is about the same whether the civ is at war or peace, so these units are designated as <l:6,112>Special Forces<e>. The training of militias is less than that of regular units man-per-man, but since the size of a city's militia would be greater than that of a single regular unit, their defensive strength is set equal to that of a regular unit. 
The militia may be called out in times of civil unrest, and thus they exert martial law like regular units. However, since militias are not standing units, being called upon in times of emergency, they do not prevent slave revolts. Finally, since militias are called out to defend their homes, they have no movement or offensive capabilities.
