It was at this crisis, when nothing was being accomplished in Louisiana and everything was happening in Virginia, that Grant ordered Canby to put off his designs on Mobile and to send the Nineteenth Corps with all speed to Hampton Roads.(4) Canby understood this to mean the First and Second divisions, and placed Emory in command of this detachment. On the 30th of June the two divisions began moving down the river to Algiers, and on the 3d of July the advance steamed out of the river into the Gulf of Mexico with sealed orders. When the steamer _Crescent_, which led the way, carrying the 153d New York and four companies of the 114th, had dropped her pilot outside of the passes, Davis broke the seal and for the first time learned his destination. Within a few days the remainder of the First division followed, without Roberts, Emory accompanied by the headquarters of the expedition going on the _Mississippi_ on the 5th of July, with the 30th Massachusetts, the 90th New York, and the 116th New York, but transferring himself at the Southwest Pass to the _Creole_, in his impatience at finding the _Mississippi_ aground and his anxiety to come up with the advance of his troops. The _Crescent_ was the first to arrive before Fortress Monroe. The last regiment of the Third brigade sailed on the 11th. Grover's division began its embarkation about the 10th and finished about the 20th. In this movement some of the best regiments of the corps were left behind, as well as all the cavalry and the whole of the magnificent park of field artillery. Among the troops thus cut off were the 110th New York, the 161st New York, the 7th Vermont, the 6th Michigan, the 4th Wisconsin, the 1st Indiana Heavy Artillery, the 1st Louisiana, and the 2d Louisiana Mounted Infantry. Reynolds with the corps headquarters and the new Third division remained in Louisiana. Since this came from the old Thirteenth Corps, was afterward incorporated in the new Thirteenth Corps, formed for the siege of Mobile, never saw service in the Nineteenth Corps and nominally belonged to it but a few days, and since the detachment now sent north was presently constituted the Nineteenth Corps, the title of the corps will hereafter be used in this narrative when speaking of the services of the First and Second divisions. On the 14th of June Major William H. Sentell, of the 160th New York, was detailed by Emory as acting assistant inspector-general of the corps, and Captain Henry C. Inwood, of the 165th New York,(5) as provost marshal.