However, in September, he was forced to hastily retreat towards the Ohio River as Braxton Bragg invaded Kentucky, cutting off his supply routes. Morgan conducted a masterful retreat in the face of the much superior enemy force, despite being harassed by constant attacks from Col. John H. Morgan's guerrillas. George Morgan's 8,000 men marched over 200 miles from Cumberland Gap in sixteen days to Greenup, Kentucky, arriving there on October 3 on their way to Camp Dennison in Ohio.