Defensive structure

Defensive Structures are a type of building available in every Age of Empires game. Rather than be used to train Units or research Age of Empires Technologies, they are used to defend your civilisation from attacks, or warn it of attacks.

Age of Empires
All defensive structures reasearched and upgraded from Granary


 * 1) Watch Tower
 * 2) Sentry Tower
 * 3) Guard Tower
 * 4) Ballista Tower
 * 5) Small Wall
 * 6) Medim Wall
 * 7) Fortification

Age of Empires II
All defensive structures researched and upgraded from University


 * 1) Outpost
 * 2) Watch Tower
 * 3) Guard Tower
 * 4) Keep
 * 5) Bombard Tower
 * 6) Palisade Wall
 * 7) Stone Wall
 * 8) Fortified Wall