 In recognition of his success , Garfield was promoted to brigadier general . After Marshall 's retreat , Garfield 's command was the sole remaining Union force in eastern Kentucky , and he announced that any men who had fought for the Confederacy would be granted amnesty if they returned to their homes and lived peaceably and remained loyal to the Union . The proclamation was surprisingly lenient , as Garfield now believed the war was a crusade for eradication of slavery . Following a brief skirmish at Pound Gap , the last rebel units in the area were outflanked , and they retreated to Virginia . 
