No Gods, No Masters

 is a quest in Fallout: New Vegas.

After clearing the Hoover Dam, the Courier sets forth to the Legate's Camp for the final confrontation against Caesar's Legion.

Detailed walkthrough
To do this you may go in guns blazing or simply take out the first guard and disguise yourself then as you go up the steps you may want to save. You have two paths: one fight your way through legate leader or, if you have a speech skill of 100, talk your way out (have in mind he is a very tough enemy but you get the bonus of his weapon and his mask for killing him). Once done proceed to the gate you entered through and once you walk up to it it will explode and heavy NCR troopers will walk in as well as the general who will talk to you (notice there is a fog behind the gate). You have a few options which will all clear the fog revealing your army with Yes Man leading it. Depending on your choice they will either kill the NCR or they will just let them walk away. Afterwards Yes Man will tell you you've done well and say he's going to get an upgrade to be more assertive.

Behind the Scenes
The name of this mission is a reference to the phrase "Ni Dios Ni Amo" which translates to "Neither God nor Master" and was a slogan from 1881 of the Spanish 19th century anarchist group Mano Negra. The slogan was also popular with several anarchist groups during the Spanish civil war of the 1930s.