A Trusted Aide

 is an unmarked quest in Fallout: New Vegas.

Quick walkthrough

 * Work for Caesar's Legion in order to gain access to Caesar's Legion safehouse.

Detailed walkthrough
Continue doing assigments given by Caesar's Legion members and earn their respect. Once you have reached the status of 'liked', you will be given the key to this safehouse by Lucius, leader of the Praetorian Guard. At this safe house there are multiple sets of legion faction armor and some weapons and the safehouse is made of two rooms connected by stairs.