...ent by the left flank, on towards Richmond, to commence on the night of the 19th. I also asked Halleck to secure the co-operation of the navy in changing our base of supplies from Fredericksburg to Port Royal , on the Rappahannock. Up to this time I had received no reinforcements, except six thousand raw troops under Brigadier-General Robert O. Tyler, just arrived. They had not yet joined their comm...