Ogres of the North…

Many stories are heard about the 'Ogres of the North', each race around the North wastes have their own stories to tell from the smallest of Goblins to the mightiest of Chaos Champions. It is heard that they used to fight alongside The Empire, mechanaries, 'defending' againsts the Orc hordes and the threats of Chaos to the East of the Empire. But they Were a different tribe back then, a different Tyrant.
It was during a Chaos raid from the marauders of the North when the ogres fought alongside with a small force from Ostermark. The force was ambushed by a Chaos horde. The battle left only a few empire survivers, only several were keen to tell their tales of what had happened.
It was thought that the mechenary ogres had all deceased during the fighting or fled after seeing the losing battle, realising there was not much chance and dead humans don't pay.
These were all tales, stories, which for the Empire state troops kept them at ease. This was thought to later be confirmed with the corpse of the Ogre Tyrant found close to the battle field in a mangled state. The cuts were not from Chaos weaponry, for the wounds and cuts on the body were from large, blunt blades which the stongest of Chaos warriors could lift.

The Ogres had not been killed or fled, but instead something had drawn them to join the chaos marauders, and head North... for they had been chosen.