"This is Testament of His Mercy, Imperial Grand Cruiser. We have mutinous crew on board. There was a forced real space reversion. By His light the ship survived intact but engines are offline. Sections of the hull are still burning. Unknown number of crew dead. This is a general distress beacon of Testament to His Mercy. We are in an unknown system. We are caught in the gravity well of a planet. Auspex scans going out with this message. May He watch over us. May His light light our…"
"Gentlemen this message was received 3 months ago. Astropaths have tracked it to this world. And a hellish one at that. Testament has gone down on the ice covered northern continent. Average day time temperature sits just above -30. It is a tundra out there. Survivors have clustered in the stern section of the cruiser with all the command and control systems. Unfortunately the rebels have taken up positions around the bow and out into the wilderness. They have set up long range artillery batteries, anti-air defenses and other weapons from the looted stores."
The general looked over his senior command staff "By we are the Death Heads. We will grind these traitors beneath our boot. Fleet has scanned the crash and the sites of the traitors. Planetary strikes will begin in the next hour. Once they cease the entire First Regiment deploys via drop pod to secure the wreck and to relieve those who remained loyal to His Throne. They may seem ragtag but true numbers are currently unknown to us. But we are the Imperial Guard. We will not fail!"
Hour later when the ice was broken and the pristine tundra was naught by ashes and dust the sky will filled with what seemed shooting stars. From hidden bunkers and remote sites the artillery of the traitors lit up the sky. Many of His warriors never made it to the ground, but their sacrifice ensured that others did.
4 weeks into the mission both sides have secured themselves further in their positions. Without clearing the enemy from their positions the heavy lifters and bulk repair vehicles of the Mechanicum will never be able to rip the Testament from her icy tomb. If that wasn't bad enough Astropaths said they are detecting another fleet approaching… it is the Lost and the Damned. They have come for a new ship bringing with them the vehicles of the Dark Mechanicum and other foul things.
Can the regiment hold its position until Imperial reinforcements arrive? Or will they fall and loose the honor of their Regiment?