Lord Commissar

If the Commissar's unit fails a morale test the Commissar will summarily execute the squad's current commander - this is the model in the unit with the highest Leadership Value. 

If two or more models in the same squad have the same leadership value, randomly determine which of the models is executed. A commissar (of either rank) will never execute himself or another Commissar (of either rank) - ignore these models when determining who is eligible for execution.

The executed model is immediately removed as a casualty, regardless of the number of Wounds remaining. The unit in question must then re-roll the failed Morale check - if this test also fails then the squad falls back as normal.

Any friendly unit within 6" of a Lord Commissar may use his Leadership of 10 for any Morale or Pinning tests as well as Leadership tests incurred by orders issued to the squad.

Independent characters follow the Movement rules for models of their type, be it infantry, jump infantry, bike, etc. In addition, independent characters can move through difficult terrain more quickly and safely than ordinary troops. All independent characters have the ‘move through cover’ and ‘skilled rider’ special rules. This advantage does not extend to any vehicles they may be travelling in.

Independent characters are allowed to join other units. They cannot, however, join vehicle squadrons (see the Vehicles section) and units that always consist of a single model (like most vehicles and monstrous creatures). They can join other independent characters though, to form a powerful multi-character unit!

When taking Morale tests, stubborn units always ignore any negative Leadership modifiers. Independent characters that are stubborn confer the ability onto any unit that they join.

A refractor field grants the bearer a 5+ invulnerable save

Models equipped with assault grenades don’t suffer the penalty to their Initiative for assaulting enemies through cover, but fight as normal.

When assaulting a vehicle, each model using Krak grenades can only ever make one attack, regardless of the number of Attacks on their profile and any bonus attacks. Against vehicles, Krak grenades have an armor penetration value of 6+D6.