What Are Imperial Fists Based on?

Iron Warriors - Greeks. White Scars - Mongol Khanates. Space Wolves - Vikings. Imperial Fists - Germanic.

What culture are Imperial Fists based off?

The Imperial Fists are suppose to be an expy of the Prussian culture and kingdom, and the Fists seem to be culturally very similar to the German people with the Black Templars being Teutonic Knights, and the Executioners being akin to non-Wolf Vikings.

Who are the Crimson fists based on?

The Crimson Fists were a crusading fleet-based Chapter for the next nine Terran millennia much like their brother Chapter the Black Templars. The Crimson Fists travelled throughout the Imperium, defeating the enemies of the Emperor.