Mobile., Sept. 20.
--A special dispatch to the Advertiser and Register,
, the 19th instant, says.
The enemy evacuated Cumberland Gap
Wednesday night, blowing up their magazine, destroying all their property, and blasting rocks to block the roads.
They retreated by the Harland road towards Kentucky
, our forces pursuing them at Cumberland Ford and Baptist Gap.
family, who were at Greenville
, East Tennessee
within our lines have been permitted by order of the Secretary of War
to return to the enemy.