...in his movements, Hooker tried to put the enemy on the wrong scent by means of certain demonstrations along the Lower Rappahannock. About the 21st of April, Doubleday's division proceeded as far as Port Conway , twenty-one miles below Fredericksburg, and made a feint of preparing to build a bridge; two days later, the 23d, a regiment, the Twenty-fourth Michigan, having actually effected a passage in boats, ...