Not seen by many, and unknown to the Masses - the Brotherhood do in fact have a standing Army. Comprised of rogue F.O.N. Operatives, Morlocks, Human Sympathizers, and the mysterious Caprican Legion.
The original Caprican Legionnaires were former ASP Troopers who manifested Mutations brought upon by the R.D.S. Virus - the crack 12 Man team led by Major Caprican, fearing for their position and status - not only within the Ranks of the ASP Troopers, but also society as a whole, vanished into the Wilderness. Taking with them a cache of ASP Trooper weapons and gear
Showing up some time later fighting amongst the ranks of the Brotherhood as the white clad Caprican Legion.
The Caprican Legionnaires are never seen without their Unique Helmets, different in design to the Regulation ASP Trooper gear - more menacing and completely covering their heads. The stories go that the Legionnaires are so deformed, so twisted by the R.D.S. Virus - that they never show their faces out of shame.
Other stories tell of them augmenting their slowly decaying bodies with stolen Varian Blackwood Technology, and that they are more Machine than Man now - held together by their Armour and stolen and forced into service merged with their twisted and broken forms.
The Dino-Parks were a vision of the Uni-Tech corporation (the business that funded the research) for the future, a vision of them making a LOT of money, they no only saw them as a gateway to providing the holiday experience of a lifetime (and charging a ridiculous amount of cash for the priviledge) - a lot of the Technicians and Scientists involved in the project saw it as a way of potentially ending world hunger.
The only problem was finding a way to get the long dormant Dino-DNA to combine with modern donor tissue, once that was achieved - using accelerated growth cloning techniques (though illegal, Unitech still intended on using ANY resources available to achieve their goal) - they used the DNA and Chemical makeup of a Virus as a "carrier" . . . . .
R.D.S. Virus (Reactive De-evolution Syndrome Virus) - and its attempted Cure, has led to all sorts of problems. Mutants with Human and Dinosaur traits roam the barrens outside the surviving walled cities, totally rejected by society - unlike their more physically accepted Mutant Brethren dubbed "Primes" by the Government. Carrion wander in formless bands preying on the weak and defenseless, and the Ghoulish Giaour feast of the flesh of Carrion and Human alike.
