User blog comment:40kfan/IG Colab: For real this time/@comment-8395098-20140823161254/@comment-10541616-20140823162855

Here's a basic overveiw of the Pantheon's tactical dispostion:

While the Zulkir will be in the Capital, the Thiracons will most likely be leading their respective Warhosts, as they prefer tp lead from the front. In addition, the Pantheon is fully aware that the Imperium is coming, so they've set up all manner of defenses, including anti-aircraft weapons to keep the IG from landing on the planet, the capital having the most abundance of said defenses.

So, it would probably be best to attack one of the nearby townships and work your way to the Capital with the support of your fellow regiments. The 63rd is the obvious choice for the first assualt, so once they've nutralized the defenses in a given area, it would be safe for the bulk of the forces to land and deploy.