Asgard Shields, named for their modular shield-linking design, are broadly applied along the border defense network of Asgard. Standard configurations include a set of 4 shields that form the foundation of defenses with equipment such as guns, ground spikes, and tank traps. The shields include connective devices on all sides that can be used to link with mobile fortresses are are the most basic element of ""fortress systems"". The 3 classic formations include:

Double Firepower, Golden Traingle, Iron Quartet.