... the pontoon-bridge and camped on the Blackwater, near Mt. Sinai Church. Here we remained till the 22d of June--the same day I reached the White House with Gregg and Torbert-when, under orders from General Meade , he set out to cut the enemy's communications to the south and southwest of Petersburg. His instructions implied that the breaking up of the Petersburg and Lynchburg, and Richmond and Danville r...