Phil Vassar, Lee Ann WomackLee Ann Womack, Phil Vassar and Montgomery Gentry have signed on to sing for more than 350 mililtary bases in one night. They'll perform at the sixth annual American Freedom Festival in Fairfax, Va., on Nov. 7, in a concert that will be broadcast live to military bases in more than 170 countries around the world.

"We are very excited that these great artists have agreed to join us in our efforts to help veterans and their families," said American Freedom Foundation co-founder, Sergeant Jack L. Tilley. "They are known for their patriotism and love for our military and are a great fit for our event."

The American Freedom Foundation supports wounded and disabled veterans and their families, along with families of those killed while serving their country.