CHAPTER XII.
RETREAT WITHIN THE LINES--REORGANIZATION--HALLECK AND HIS SUBORDINATES McClellan's visits to my position--Riding the lines--Discussing the past campaign--The withdrawal from the James--Prophecy--McClellan and the soldiers--He is in command of the defences--Intricacy of official relations--Reorganization begun--Pope's army marches through our works--Meeting of McClellan and Pope--Pope's characteristics--Undue depreciation of him--The situation when Halleck was made General-in-Chief--Pope's part in it--Reasons for dislike on the part of the Potomac Army--McClellan's secret service--Deceptive information of the enemy's force--Information from prisoners and citizens--Effects of McClellan's illusion as to Lee's strength--Halleck's previous career--Did he intend to take command in the field ?--His abdication of the field command--The necessity for a union of forces in Virginia--McClellan's inaction was Lee's opportunity--Slow transfer of the Army of the Potomac--Halleck burdened with subordinate's work--Burnside twice declines the command--It is given to McClellan--Pope relieved--Other changes in organization--Consolidation--New campaign begun..