An Aegis Defence Line defended by Ultramarines Scout Marines and outfitted with a quad Autocannon for anti-infantry defence.

A close-up of the quad Autocannon used by an Aegis Defence Line.

An Aegis Defence Line is an Imperial barricade built from crenellated armoured sections that link together into a solid shieldwall. Their simple design means that they can be built and deployed at great speed, lending them the nickname of "instant fortresses."

Aegis Defence Lines are ideally suited for commanders wishing to hold ground in enemy territory or establish defensive perimeters until such time when larger, more permanent fortifications can be constructed.

An Aegis Defence Line can be protected by heavy weapon emplacements such as a quadruple Autocannon for anti-infantry protection or, for anti-air defence, an Icarus Pattern Lascannon.


  • Warhammer 40,000: Stronghold Assault (6th Edition) (Digital Edition), "Aegis Defence Line"
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