War of the Banners

Following the destruction of Paramacca in 720BGE, Mayor Tentavius of Pembleton utilised the city's military and economic power to attempt a revival of a unified kingdom. However, he faced opposition from Coltar and other minor settlements, who viewed Pembleton as a collaborator with Paramacca in the Northern War, in contrast to their own espoused moderate resistance (however, historians have later thrown the assertion of their 'resistance' into question).
The war was protracted and highly destructive, as the two relatively distant and heavily fortified cities of Pembleton and Coltar waged a proxy war across the countryside and vied for control of the land and settlements between them, with both sides proving to be more resilient than the other expected. Pembleton itself suffered greatly, particularly on its outskirts, with its agriculture and mining operations being a target of sustained raids. The city became increasingly exposed to incursions from smaller opposition settlements as the city's military pushed up towards Coltar itself towards the end of the war.
Mayor Tentavius ended the conflict through his marriage to the daughter of the mayor of Coltar, Gavenia Margaret of Coltar, paving the way for the Greater Kingdom.