Available only to European civilizations, such as the British, the technology costs 150 and 150 and can be used only once. With the Colonial Militia Home City Card, however, Levy can be researched one more time.
Minutemen are a good tool for quickly defending the colony if rushed by opponents. They are also effective in large infantry armies due to their good attack and being protected by the numbers around them.
But the fact that they automatically lose hit points should be kept in mind: they should not attack distant areas, as they arrive at such locations drained of hit points.