The Banning are a forest people. Living in small interconnected groups deep in the woodlands, they are proficient hunters and extremely self-sufficient with a fondness for mead.  The Haji Warig warband lived in the woods near Banning. (Episode 9)
Lagrathorn was incensed to see a delegation from Herot arriving at Banning, uninvited and without warning, before proceeding to erect a giant log covered in Rheda's "wretched" laws outside of his hall along with a message from her insisting that he publicly declare that said laws would be upheld by the Banning, despite him telling her earlier at the Gathering that he would have no part of the laws she intended to force upon the tribes. Storming off to Herot while comforting himself with drink, Lagrathorn confronted Rheda, asking her what was the point in these laws. Her reply would be one better as she shown him a captive Warig, who Lagrathorn identified from its rags as being of the Haji warband which lived in the woods near Banning, noting that it strangely wasn't afraid before Rheda ordered it executed. Rheda would elaborate on what she shown him, explaining that a Warig uprising was coming and that she needed to know that she could rely on the Banning's support, the Varni being vanished, the Mere ghost people, and the Wisdeth farmers, pointing out that if Herot should come under threat she would need Lagrathorn's archers and woodmen. Lagrathorn gave Rheda his word that he would send his warriors should Herot need them, noting that he still had the capacity to surprise her. Sensing Rheda anticipating the sting in the tail, Lagrathorn gave her his condition that he would only give his support if he didn't have to accept her laws. Rheda begrudgingly accepted Lagrathorn's condition, telling him that he could take down his banner and that the Banning may have their own laws, but not without forewarning that she could always have another banner of her laws made when the time was right. (Episode 9)
In anticipation of a coming Wulfing/Bregan invasion of Herot, Rheda ordered riders be sent to the Banning, as well as the Wisdeth and the Mere, to request their assistance. Beowulf pointed out that they would not make it in time and so opted himself to approach the Varni, who were closer, albeit banished from the Alliance. However, Slean noted that the Banning could arrive if they were given more time, and so had Gil join him in leading a force of a dozen Huskarla at the Draca Bridge to hold off the Wulfing army. (Episode 11) Ultimately, however, only a few bedraggled Banning warriors arrived in Herot.