...gust, by returns from hospitals and elsewhere, his army had increased to 58,600 men. On the 9th of September, he detached Longstreet, with two of his divisions, to help Bragg, in Tennessee, keep back Rosecrans from marching farther up the Great valley toward Virginia, leaving with himself some 46,000 men. Longstreet wrote, in farewell to Lee, speaking for himself and his corps: Our affections for you are s...