Maccabian Janissaries
The Maccabian Janissaries are the masked, pious fighting force of the Holy shrine world of Maccabeus Quintus. Zealous in faith and fanatic in war, the Janissaries are the elite handpicked guardsmen of the planet who seek to spread the imperial truth to all corners of the galaxy. Because of this, many see that becoming a Jannissary is the best form of pilgrimage; to be a pilgrim in a vast and unenlightened galaxy.
While relatively few in number compared to other regiments, the Janissaries more than make up for their numbers by being some of the most finely equipped warriors in the imperium with Flak armour Mk1-NonCardboard, badass silver masks to prove their faith to their blessed saint, Drusus and a disciplined Napoleonic shoulder-to-shoulder fighting style similar to the Mordian Iron Guard.
Currently there are no miniatures supplied from Games Workshop or Forgeworld to justify their awesome, making them one of the most underrepresented if not lesser known regiments in the Imperium. Luckily, their appearance is similar to a Power Armoured Space Marine or Sister of battle, take a few tons in metal off the top and add a few purity seals for good measure.