In the wilderness surrounding Tristan's capital city of Gallioli, Toggog and his minions attempted to ambush and loot a heavily armored Tau hunting party but were fought off, the battle ending in a stalemate. Later, when the demon prince's army encountered a rival band of chaos raiders amongst the ruins of the city, his rage was too great to contain and they slaughtered the rivals to the last man. Skulls are skulls, after all, and Khorne must be appeased...
After their rok transports were caught in a sudden warp displacement, a marauding band of orks from Waagh! Mahkook found themselves stranded on the surface of Tristan. As they began to set up a staging area for later assaults on the nearby human settlement, they were detected and attacked by elements of the 14th Tiefwalder Armored Infantry Regiment, sending them fleeing into the urban wasteland. Unfortunately, this placed them directly in the path of the newly awakened necron juggernaught. The plucky greenskins put up a valiant fight against the silent robot phalanx but were defeated in the end.
A large group of chaos raiders traveled through a warp storm and descended upon the Tristan wilderness. As they went about scouring the planet's surface for valuable slaves and munitions, they unknowingly disturbed a Necron battle group from multimillenial slumber. Rising from their newly exposed tomb, the somber automatons repelled the chaos raiders and eventually sent them running for cover amidst the ruins of nearby Gallioli. As the chaos lord attempted to reorganize his battered company, they were suddenly set upon by another chaos faction and slaughtered to the last man.
A hunting party of Tau were pursuing a contingent of orks from Waagh! Mahkook when their ships were caught in a freak warp storm and sent hurtling halfway across the galaxy to the surface of Tristan. As they surveyed their new surroundings, they were suddenly attacked by the Demon Prince Toggog and his ruthless band of chaos veterans. After some heavy initial losses, the Tau managed to find their footing and repel the attacking psychotics long enough to get away. Eventually they picked up the trail of their original ork quarry, but it led them into an imperial guard encampment in the ruined city. Battle ensued, and the Tau were narrowly defeated.
Units from the 14th Tiefwalder 3rd company were deployed as auxiliary planetary defense forces on Tristan. Just before the traitor Karel declared secession, he sent the loyalist Tiefwalders out into the Tristan wilderness to investigate a rather dubious account of xeno invaders. After being pummeled overnight by intense storms, they came upon a recently arrived party of orks from Waagh! Mahkook. After a day of pitched battle, the orks were routed and the guard pursued the surviving enemy back into Gallioli. Startled to find the capital city in ruins, destroyed by unknown forces, they made camp and evaluated their next course of action. It was then that a tau hunting party stumbled onto their position and battle was joined. Tanks fought tanks and losses were heavy for both sides but the tau were eventually defeated.
An age-old cell of necrons was reactivated when the monolith capping their tomb was exposed by violent warp storms and disturbed by marauding chaos looters. After annihilating the band of pirates, the necrons swept into ruined Gallioli. From afar they perceived a roving band of orks and moved to intercept them. After these new opponents were similarly defeated, the necrons simply resumed their pilgrimage through the desolated streets, following their ancient impulse to wander the planet until all usurpers were ground under their metal heels.