The Jaeger Encampment is an Industrial Age Military Building. It is where a player can train the Jaeger Infantry, the light unit of the age. It is the second unlocked military building of the age. In order to construct the Jaeger Encampment, a player needs to have unlocked the Reconnaissance technology. It is very strongly recommended to build the Jaeger Encampment, as the Jaeger Infantry is a very effective unit that gains a significant range increase compared to the Ranger of the previous age. The size of the building is also a "standard" 3x3, making it easy to clear room for it.
The Jaeger Infantry is most effective against fast units. It gains defense in bushes and forests.
For more information about the military unit, visit the Jaeger Infantry page.