From 327PC to 346PC the beastmen of the Kaalroen Empire became ever more belligerent after a long running dispute between the two major beastmen factions was resolved with the death of one of the rival warband's leaders. Now united, the beastmen began to plunder and pillage far and wide, leaving destruction behind them. The more civilised south of the Empire was quite happy with this state of affairs.
The beastmen raids led to some notable battles. In 331PC the Ogres of Cuitlaxaochitzin destroyed a raiding warhost in Arnar while they were campaigning as mercenaries for the High Elves. Irritated by this, Lord Traegan moved against the Ogres, defeating them decisively and prematurely ending their campaigning for that year. The beastmen had not finished suffering however as late in the same year a wood elf warhost, angry at the pillaging of nearby forests, defeated a beastmen horde and cleared much of the southern woods.
In 335PC the skaven of Typhus defeated the beastmen in the north while on one of their now regular searches for precious warspstone. The beastmen suffered further reversals in 337PC against the High Elves in the north. Despite the losses of the beastmen the Kaalroen's prospered, as the attentions of their many enemies were concentrated on the marauding beastmen. In addition this meant that internal problems caused by the Kaalroen's northern members were largely avoided during this period.
In 339PC however the beastmen hordes of the north combined under a single banner and surged south, meeting a dwarf army in the Mountains of Mourn. Here the dwarfs suffered a shameful defeat and the beastmen made of with much plunder. Seven years later the Kaalroen Empire tasted more success on the battlefield, when the army of Hovedstaden finally challenged the skaven in Canabrin, sick of their wanton plundering of Warpstone from their domain. The Skaven were crushed, and it would be many years before Typhus would send an army north to search for the precious substance.