Tyzuris
Primarch to your glory& the glory of him on Earth!
Assume that Ultramar in 41st millenium with 500 planets and 15 trillion people and thousands of warships is transported to ME era and Ultramar is lead by Roboute Guilliman and he has billions if Imperial Guard and a quarter million Ultramarines. Assume Ultramar is transported to ME-verse around the time of First Contact War.
How will this change the timeline?
How will this change the timeline?