 The attack on Grant was originally planned for April 4, but it was delayed for 48 hours due to a heavy rain storm that turned roads into seas of mud, causing some units to get lost in the woods and others to grind to a halt faced with heavy traffic jams.It ended up taking Johnston 3 days to move his army just 23 miles.This was a significant setback for the Confederate Army, as the originally scheduled attack would have commenced when Buell's Army of the Ohio was too far away to be of any aid to Grant.