Blackfoot The Blackfoot tribe is a tribe from the former Arizona . It was the first of the tribes that Caesar took control of and forged into his Caesar ' s Legion . Background . Origins . The Blackfoot tribe is unrelated to the Native American tribe of the same name . They were " founded " by a former military group ( led by a Captain John Bloch ) which was left stranded after its HQ and transport vehicles were destroyed in the war . Skilled with weapons but lacking the knowledge of how to farm , Bloch ' s group fell into raiding . During a standoff in one raid on a small ranching community the ranchers called a truce and offered to pay the raiders " protection money " to keep them from raiding . The raiders agreed and that became the start of a successful relationship . As the raiders had few places to spend the money they ended up spending it on equipment , food , and liquor from the ranchers , and the two groups became intermingled over the next decade as disaffected rancher sons went to join the raiders and older raiders " retired " to start ranching . During this time several wandering groups of Native Americans ( who left their reservations after the American government collapsed and there was no longer anything to stop them from claiming nearby land ) established a relationship with the raiders / ranchers and the two groups joined together for greater strength ; the tribes gain access to some technology and a fortified home , while the raiders / ranchers gained access to skilled outdoorsmen who knew the area very well . A great fire destroyed much of their original settlement and they ended up relocating to a small tourist trap in the hills . They continued to raise their brahmin and make extensive raids into other communities for livestock and supplies . Their firearms succumbed to dirt and wear and over time they forgot how to repair and maintain them , becoming much like any other tribe . About 20 years later a sickness depleted their available number of younger people , so they took to raiding other tribes for children and teens in order to replenish their numbers . Eventually this scope broadened into slaving for laborers as well as adoptees , and slaving for profit soon followed . Now they are slave - raiders with a fixed base , despised by all others near them for their predation . The Blackfoots were mostly parasitic , taking things from other tribes and settlements . However , they exported slaves to other tribes and slaving organizations , and when their herds were doing well , they would sell brahmin products to nearby communities . Caesar ' s Legion . At some point in 2247 , Mormon missionary Joshua Graham , as well as two Followers of the Apocalypse - Calhoun and Edward Sallow , the young man later known as Caesar , were captured by the Blackfoot tribe for ransom . At the time the tribe was at war with seven other tribes , a war they were inevitably going to lose . Unwilling to be destroyed along with them , and against the wishes of his companions , Caesar chose to use his knowledge to train the Blackfoot tribe in the art of warfare after witnessing their lack of knowledge first hand . He showed them how to clean and maintain guns , operate with small unit tactics , create their own explosives and to strike at their weakest enemies first ; divide et impera - divide and conquer ( Latin ) . He quickly impressed them enough to the point where he was made their leader . He soon introduced the concept of total war to the tribes around them - Caesar knew that though the tribes had always fought each other via occasional skirmishes , he considered them to only be " playing at war " , having never seen warfare at its most destructive and barbaric . They defeated the weakest of their enemies first and enslaved many of the able - bodied survivors but Caesar had the rest , including women and children , killed and their remains piled high . When they confronted the next tribe , they brought an emissary back to view the carnage . The concept of total war was an entirely new , and terrifying , facet to his strategy that they had never confronted before and would form the core of the Legion ' s tactics and outlook . Surprisingly , Joshua Graham decided to join Caesar as his right - hand man , now known as the Malpais Legate . While Calhoun was sent back to the Followers to inform them of what he was doing , the other six members of the expedition were murdered on the self - proclaimed Emperor ' s orders . Caesar formed his Legion out of the tribes that had either been conquered or had chosen to capitulate to avoid total destruction . Caesar chose the concept of the Roman Empire to model the Legion after because of its parallels to what he considered the status - quo of the post - apocalyptic world . Ideologically , the Roman Empire was also appealing to him for its ability to assimilate those it conquered , the destruction of such " tribal " identities a key goal to the Legion ' s long - term strategy of unification . He intended to erase their individual identities and replace them all with a single , monolithic culture - the Legion - where individuals have no value outside of what they offer the greater whole ; long term stability at all costs Interactions with other locations . The Blackfoots had no interest in ghoul s ( they considered them walking dead and bad spirits ) or super mutant s ( demons in the flesh of men ) and were very unwelcoming of such beings within their town , requiring a lot of diplomacy or gifts to win them over . Appearances . The Blackfoots were to appear in " Van Buren " , the canceled " Fallout 3 " by Black Isle Studios . They were mentioned in " " . Behind the scenes . The is an actual Native American tribe that once were nomadic bison hunters in the plains . They ranged from Alberta , Canada to the US state of Montana .