It took me a while to get the hang of controlling the entire team and keeping them out of harms way. They also have various alert states (passive, defensive, and offensive) that effect how they will react to their environment when you’re not directly controlling them. Your team members can run, walk, crouch, or crawl. The hardest part of playing is getting used to maneuvering your squad correctly. These recruits (at least those who survive training) join the Brotherhood of Steel, dedicated to restoring the world to its former prosperity through whatever means necessary. With their superior technology they protected the villages around them in return for supplies and for the strongest and brightest children. Eventually, unable to continue onward, they formed a new enclave on the outskirts of the ruined city of Chicago and began to expand.
Cast out from the Vaults, they made their way east. The isolationists forced those who wanted to expand to leave on a doomed mission.
Eventually a schism developed in the Brotherhood between those who insisted that no outsiders could be allowed to join the Vault-dwellers and those who foresaw the end of the Vaults as their numbers dwindled into nothing. But the Vaults were not stable and the Brotherhood of Steel was formed to bring order to the wastelands. After the apocalypse, mankind survived in two groups - camps of refugees on the surface who fight the radioactive wasteland and the elite in crumbling underground Vaults dreaming of their former glory.