It's Titan vs Titan as Chaos squares off against the Imperial Guard. Explosions send the fodder cultists flying and a warpstorm tears the enemies base apart.
Seen from a nearby hilltop, the Imperial Reaver Titan is destroyed and topples back onto a supporting Warhound.
From the ground the combat is nearly completely obscured. Cultists are forced forwards by their squad leaders in a futile attempt to damage the enemy, being much more useful detecting invisible snipers and airborne forces.
The warpstorm boils the skies as the Imperial base collapses around the techpriests who built it.
The Imperial Titans fall and the way is left open for the tides of Chaos cultists to push into the enemy base proper. I don't think a pintle mounted machine gun is going to help much.
In another area of the map, the daemon primarch Angron towers over some amazingly still alive guardsmen. They're not running because...
They're backed up by a Stormhammer. Four huge barrels zero in on the daemonic primarch, but they're in for a rude awakening because...
A Daemon Prince has his burning eyes on an easy target.
After stepping on the guardsmen Angron goes looking for slightly larger prey, finding it in the form of another Reaver Titan. It is of little challenge to the Chaos infused primarch who shrugs off amassed fire without getting hurt at all.
Getting tired of hacking at the legs of the titan, Angron summons about 5 Bloodthirsters and proceeds to tear into the command centre of the Imperial Guard.
Returning a little later and we find that the Bloodthirsters have multiplied into 10. Just Angron himself was already overkill.
The base was promptly levelled. Here we see the efforts of the Iron Warriors superior knowledge of siege warfare. They know how to build and maintain a defensive line.
Amidst the mountains of corpses on the bridge lies the body of a Khorne Terminator Berserker. Surrounded by guardsmen, psykers and ogryns he surely served Khorne well.
Victory for Chaos!
Chaos Space Marines (Iron Warriors: Me), Chaos Daemons (A.I), Chaos Space Marines (Black Legion: A.I).
VS
3 Imperial Guards (8th Cadian Battalion: A.I).