A NECRONS Detachment is one that only includes models with the NECRONS keyword (excluding models with the UNALIGNED keyword).
- NECRONS Detachments gain the Royal Court and Dynastic Agents and Star Gods abilities.
- NECRONS units in NECRONS Detachments gain the Dynastic Codes ability.
- Troops units in NECRONS Detachments gain the Objective Secured ability.
DYNASTIC CODES
All NECRONS units with this ability, and all the models in them, gain a Dynastic Code so long as every unit in that Detachment is from the same dynasty. The Dynastic Code they gain depends upon which dynasty they are from, as shown below.
Example: A Mephrit unit with the Dynastic Codes ability gains the Solar Fury code.
If your dynasty does not have an associated Dynastic Code, you must instead create a new Dynastic Code for them. This allows you to customise the rules for your Necrons dynasty to best represent their fighting style on the battlefield.
In either case, write down all of your Detachments' Dynastic Codes on your army roster.