Why did Imperial Guard become Astra Militarum?

Following the events of the Horus Heresy, however, the Imperial Army was split into two organisations; the Astra Militarum, and the Imperial Navy. This was done to prevent the possibility of large-scale rebellions occurring again, as the new regulations ensured that the link between fleet and army was severed.

Does the Imperial Guard still exist?

The Imperial Army ceased to exist and the link between fleet and army was permanently severed.

Who commands the Imperial Guard?

Lord Commander Militant of the Imperial Guard: This is the highest rank of the strategic staff of the Departmento Munitorum. A powerful official, he is often appointed to a position on the High Lords of Terra, the governing body of the Imperium.

How old are the Imperial Guard models?

So ranking by oldest to newest we have: Eldar @ 15.88 Years. Imperial Guard @ 12.57 Years. Tau @ 11.33 Years.

Is Constantin Valdor a Primarch?

A warrior of superlative skill, it was said that Valdor could match even a Primarch in single combat. Indeed, such was his might, that there were those, even in the Imperial Court, who called him a “Primarch” in all but name.

Do custodes have Psykers?

The Custodians have no psykers (that we know of). Their complete genetic rebuilding is of a different scale than even the Grey Knights, however, they aren’t simply implanted with a bunch of organs but effectively recreated from the cellular level.

Can commissars be Psykers?

They are able to use their psychic abilities to aid the commander in his decisions by predicting or sensing enemy movements, or more directly in combat, psychically attacking the enemy or protecting allies. Commissars are always ready to execute a psyker in danger of Daemonic possession.

Can a commissar execute a Space Marine?

That would be no, commissars have authority over the Guard and certain naval personnel.