This is Bruder Heinzfried of the Hellblaster Gruppe of the 1st Zug 2nd Gefechtskompanie Galactic Knights Space Marines.

Here is another bit of fluff about the Galactic Knights Space Marines, this time about there beliefs :

Beliefs

 The founding members of the Galactic Knights of the Ordo Teutonicus came from Terra as explained earlier. They believe in a deity which is long forgotten by the rest of humanity. The rites of the Chapter are very obscure and only a very small inner circle knows about these in the 40.000 milenia. This inner circle consists of the Hochmeister and the rest of the Chapter headquarter as well as the members of the 1^st Gefechtskompanie. What is known is that the brothers of the Galactic knights go into battle chanting:” In hoc signo vinces” The Priesterbruders are keeping up the rites.

The most important for all chapter members is the protection of Humanity, the Emperor and the founding Hochmeister Heinrich. The remains of Hochmeister Heinrich are kept in a special chamber in a stasis field and he still looks like he died only yesterday .

The Galactic Knights believe that the Emperor is the only human being that followed their deity to the fullest and therefore is the human with the greatest psychic power. Psychers / Librarians are not recruited into the order according to the founding under Primarch Dorn.