A recent Fallout lore analysis clarifies the timeline and geographic scope of Caesar's Legion conquests, establishing that the Hidebarks tribe fell and Lanius took the position of legate before the First Battle of Hoover Dam.

  • Southeastern Utah, southwestern Colorado, western New Mexico, and northern Arizona were conquered between 2248 and 2274, according to the Official F:NV Game Guide Collector's Edition.
  • Caesar declared himself the Son of Mars by 2250.
  • A capital was established in Flagstaff by 2255.

Expansion Timeline

The Official F:NV Game Guide Collector's Edition confirms the chronological framework of the conquests. This documentation addresses questions regarding the true extent of Legion control in northern territories compared to official claims.

"And since forming the Legion, all you've done is conquer other tribes?"

Courier Six, Protagonist

"That's right. Decades of warfare, absorbing lesser tribes, gathering power. Forging the dross into a vast, razor-sharp scythe. My Legion's expansion has never ceased. Much of the Utah and Colorado, and all of Arizona and New Mexico, are mine. We have cities of our own, but nothing compared to Vegas. Finally, my Legion will have its Rome."

Caesar, Leader of Caesar's Legion

Trade Routes

Merchant activity remains bound by taxation and security demands across the conquered lands.

"Between having to hire protection and getting slapped with taxes, it's more profitable to stick to Arizona and New Mexico. But, I do cross the river from time to time when an opportunity comes along."

Dale Barton, Trader

"Do you ever trade with the NCR?"

Courier Six, Protagonist

"Tell me about Vulpes Inculta."

Courier Six, Protagonist