Himmelite are a race of (Near-) humans from planet Himmel. Himmelites are descended from people taken from ancient Canaan. They were previously used by System Lord Nirrti as breeding stock for Jaffa candidates. Now with the Germans having forced Nirrti out and seeking to conquer the Himmelites, they function as formidable enemies to the Nazis or, if they are captured, as a source of forced labor for the colonists.
The opponent of the Himmelites, the Nazi colonists' army , is well equipped, with their original armaments augmented with reverse engineered Ma'Tok staff weaponry and other technology captured from Goa'uld. They also have tanks and fighter craft on par with the modern American military and their firearms are superior to those of the SGC in many ways. In spite of these advantages the Himmelites' numbers and knowledge of the terrain has proved an apt match for them. And without more resources the colonists have not developed enough weapons to crush their enemies once and for all.
But the Himmelites have a plan. In recent years they have purposefully allowed some of their number to be caught and to participate in the workforce. These spies learn as much as they can before trying to flee back to their tribe to relate what they have found. Eventually, the Himmelites hope to discover some key to defeat their enemies forever. If they ever get any kind of advantage undoubtedly the Himmelites would not hesitate to wipe the Nazis out. (RPG: "First Steps: The Stargate Unexplored Worlds Roleplaying Sourcebook")