The city was now completely invested, and all communication with the interior cut off. A complete blockade had been established by Commodore Conner. Several officers applied to General Scott for the privilege of leading storming parties. They were thanked, but no orders were given. In a meeting with his staff—Colonel Totten, chief engineer; Lieutenant-Colonel Ethan A. Hitchcock, acting inspector general; Captain Robert E. Lee, engineer; and Lieutenant Henry L. Scott, acting adjutant general—General Scott spoke as follows: "We, of course, gentlemen, must take the city and castle before the return of the vomito—if not by head-work, by the slow scientific process of storming, and then escape by pushing the conquest into the healthy interior. I am strongly inclined to attempt the former, unless you can convince me that the other is preferable. Since our thorough reconnaissance, I think the suggestion practicable with a very moderate loss on our part. The second method would no doubt be equally successful, but with the cost of an immense slaughter to both sides, including noncombatants, Mexican men, women, and children, because assaults must be made in the dark, and the assailants dare not lose time in taking and guarding prisoners without incurring the certainty of becoming captives themselves, till all the strongholds of the place are occupied. The horrors of such slaughter as that, with the usual terrible accompaniment, are most revolting. Besides these objections, it is necessary to take into account the probable loss of some two thousand, perhaps three thousand, of our best men in an assault, and I have received but half the number promised me. How, then, could we hope to penetrate in the interior?... For these reasons," I added, quoting literally, "although I know our countrymen will hardly acknowledge a victory unaccompanied by a long butcher's bill (report of dead and wounded), I am strongly inclined—policy concurring with humanity—to forego their loud applause and 'aves vehement' and take the city with the least possible loss of life...."
General Scott's views were fully concurred in by Colonel Totten and others of his staff, and orders were issued for digging the trenches and the establishment of batteries. Very soon all outposts and sentries of the enemy were driven in. General Scott had warned the foreign consuls in the city of his proposed attack and had furnished them safe conducts out of the city, but they had not taken advantage of it. The marines of Commodore Conner's squadron, at his request, were now allowed to join the army, and, under command of Captain Alvin Edson, they were attached to the Third Artillery.
On the morning of the 10th the guns from the castle opened fire, but did very little damage. General Robert Patterson now joined Worth on his left, and extended the line of investment. Small parties of Mexicans were in sight in a valley, and a detachment under command of Colonel Cenovio approached the American camp and opened fire. The only damage done was the wounding of one soldier. General Gideon J. Pillow, with a part of his command and a six-pounder, opened fire on a large stone building occupied by the enemy and known as the magazine. They were soon driven off, and General Pillow advanced and attacked a small force in his front, driving them and occupying the magazine.
Colonels William T. Haskell's and Francis M. Wynkoop's regiments of Tennessee and Pennsylvania volunteers were moved on a small force on the road to Medelin, which retired, and two companies—one of artillery under command of Captain John R. Vinton, and one of infantry under command of Lieutenant A.P. Rogers—seized a point known as the limekiln, where it was proposed to plant a battery. General Twiggs moved on the 11th to extend the line of investment, which was now complete. General Scott then addressed a letter to the commanding officer of the city as follows:
"Headquarters of the Army of the United States of America, Camp Washington, before Vera Cruz,
"March, 23, 1847.
"The undersigned, Major-General Scott, general in chief of the armies of the United States of America, in addition to the close blockade of the coast and port of Vera Cruz previously established by the squadrons under Commodore Conner, of the navy of said States, having more fully invested the said city with an overwhelming army, so as to render it impossible that it should receive from without succor or re-enforcements of any kind, and having caused to be established batteries competent to the speedy destruction of said city, he, the undersigned, deems it due to the courtesies of war in like cases, as well as to the rights of humanity, to summon his Excellency the governor or commander in chief of the city of Vera Cruz to surrender the same to the army of the United States of America, present before the place. The undersigned, anxious to spare the beautiful city of Vera Cruz from the imminent hazard of demolition, its gallant defenders from a useless effusion of blood, and its peaceful inhabitants—women and children inclusive—from the inevitable horrors of a triumphant assault, addresses this summons to the intelligence, the gallantry, the patriotism, no less than the humanity, of his Excellency the governor and commander in chief of Vera Cruz. The undersigned is not accurately informed whether both the city and the castle of San Juan de Ulloa be under the command of his Excellency, or whether each place has its own independent commander; but the undersigned, moved by the considerations adverted to above, may be willing to stipulate that if the city should by capitulation be garrisoned by a part of his troops no missile shall be fired from within the city or from its bastions or walls upon the castle, unless the castle should previously fire upon the city. The undersigned has the honor to tender his distinguished opponent, his Excellency the general and commander in chief of Vera Cruz, the assurance of the high respect and consideration of the undersigned,
Winfield Scott."
To which he received the following reply:
"God and Liberty!"