marches to bring them onto the field at all. The delay in attacking the Confederates
was necessary in order to bring up a sufficient force to make the attack successful.
had his army in the same formation which the Sixth Corps held at Salem Heights
: both flanks on the bank of the river, the three sides protected by earthworks of a formidable character, and manned by veteran infantry supported by numerous batteries.
It is a serious matter to assail such an enemy in such a position except with an overwhelming force.
When the necessary force arrived the foe was gone as if by magic.