The original 22nd was just Cadian Shock Troops, but now consist of men from over 25 different home worlds. The 22nd were formed in 993.M41. Their forming was unofficial and even to this day most officials do not even know it exists. They were to be a secret force under the command of Senior officer Bayliss. Their job was to respond to any threat as quickly as possible, assess the situation, and then call for appropriate reinforcements. The soldiers selected for the 22nd were pulled from their regiments over time, eventually forming the entire regiment. A whole squad of men, now the ‘Red Bloods’ was caused to disappear on their home forge world so they could all join the 22nd . Other squads have been collected from various regiments and in many different ways. Some soldiers resist joining because they have heard stories of the dangerous missions the on which the 22nd is sent. Only once in the history of the 22nd has a squad come back from a full scale engagement completely intact.

Specialist "Crazy" Harry Sapper is what one might consider an unfortunate soul, but he wouldn't know it. Terminally insane, Crazy Harry is known throughout the 21st CRRR for his penchant (indeed, compulsion) for blowing things up with liberal application of explosives. In fact, the only reason the commissar lets him live is because he is extremely good at what he does.

During basic training, Crazy Harry was accidentally shot in the head during a live-fire exercise. By some miracle, he managed to survive, but the experience crippled his ability to socialize, all but destroyed his attention span and completely removed his ability to feel fear or concern for his fellow guardsmen's safety. It was shortly after he was released that his tendency to make things explode made itself apparent when the entire motor pool went up in flames one night (miraculously only destroying the garage and staff cars), and the only way he escaped the firing squad was because the Command Sergeant Major was impressed with how he managed to do so without being detected.

Crazy Harry does not sleep. Any time not eating or fighting is spent either staring soullessly off into space or making more and more sophisticated bombs from whatever he finds lying around. When he does decide to build a bomb, he works single-mindedly on it until it is completed, rambling inanely to himself as he does so. However, he has difficulty remembering how to make his better bombs, and so every time he makes one he has to start all over.

Appearance wise, Crazy Harry does not wear a helmet, and has long, disheveled black hair that sticks out at odd angles all over unless covered by a skull cap, and he has the look of a fanatic or madman in his eyes when he has the chance to blow something up. It is difficult to convince him to wear boots, and he always wears a wide, maniacal grin on his face. He is usually kept chained up in a tent or shed, with his hands and feet shackled together, but when the fighting starts an unfortunate guardsman is given the less-than-pleasant task of unchaining him, so he wears thick chains around his hands, feet and neck at all times unless in battle. Otherwise, he looks just like every other man in his squad.