There are at least two bands with this name: 1. Rise As One (RAO) is a beatdown hardcore band from Moscow, Russia.
Band releases new album in October, 2007.
http://www.myspace.com/riseasonemoscow 2. Rise As One was a metal band from New Hampshire. They released an independently-produced EP entitled "My Heart Aflame" in 2001.

Read more about Rise As One on Last.fm.