Cannon
Summary:
Cannons are great for point defense. Upgrade cannons to increase their firepower, but beware that your defensive turrets cannot shoot while being upgraded!
Placement:
Cannons are single target defenses that target any ground unit. They are best placed inside walls to protect resources and defenses. They should be placed closer to the outer layers of walls than defenses that provide splash damage in order to target troops attacking buildings outside your walls, which allows splash damage defenses to fire when the cannons are finally being attacked.
Cannons are great for point defense. Upgrade cannons to increase their firepower, but beware that your defensive turrets cannot shoot while being upgraded!
Placement:
Cannons are single target defenses that target any ground unit. They are best placed inside walls to protect resources and defenses. They should be placed closer to the outer layers of walls than defenses that provide splash damage in order to target troops attacking buildings outside your walls, which allows splash damage defenses to fire when the cannons are finally being attacked.