Untrue, when you ally the Enclave with the NCR they only become hostile if you make the NCR hostile, which is usually done when you enter the control center but if you bluff your way into the room the NCR won't become hostile and neither will the Enclave.
Hmm...I stand corrected. Thanks for pointing that out. :foodndrink:
I thought I read somewhere on the wiki that they were automatically hostile but I may have been thinking of this quote which refers to a glitch:
"When the Enclave Remnant appear during the fight at the Hoover Dam, if the player is sided with Mr. House or Yes-Man, the Remnants might be hostile."
In any case, they were hostile for me I remember in my first House playthough, but its very likely that I started blasting away at NCR soldiers from the get-go, so I can't say if I experienced the glitch or not. :tongue: