Levy

Levy is a research appearing in Age of Empires III. It is available exclusively to European civilizations, such as the British.

This technology costs 150 and 150, and can be used only once. It is used to rapidly muster (in five seconds) six Minutemen, a rapid response unit that can be used in emergencies. With the Colonial Militia Home City Card, however, Levy can be researched one more time.

Minutemen
Minutemen can only be trained once from each Town Center, but are a good tool for quickly defending the colony if rushed. They are also effective in large infantry armies due to their good attack and being protected by the numbers around them.

This is especially true of the Portuguese because of their free multiple Town Centers. By the Industrial Age, it is possible to have up to twenty Minutemen included in an army for low cost.

But the fact that they automatically lose hit points should be kept in mind: they should not attack far areas, as they would arrive drained of hit points.