General Santa Anna arrives at Cerro Gordo--Engagement at Atalay--General Orders No. 111--Reports from Jalapa--Report of engagement at Cerro Gordo--Occupation of Perote--Account of a Mexican historian--General Santa Anna's letter to General Arroya--Delay of the Government in sending re-enforcements--Danger of communications with Vera Cruz--Troops intended for Scott ordered to General Taylor--Colonel Childs appointed governor of Jalapa--Occupation of Puebla--Arrival of re-enforcements--Number of Scott's force. General Santa Anna had arrived at Cerro Gordo on April 9th. General Scott, on his arrival, ordered (on the morning of the 11th) reconnoissances to be made on the Mexican left by Captain Robert E. Lee, which were resumed on the 16th. These reconnoissances determined the order of attack, which was to make a demonstration with the commands of Generals Pillow and Shields on the Mexican right, and press the mass of the army on their right. This movement being successful, the enemy's communications would be cut off. In the meantime the Mexicans were busily engaged in greatly strengthening their positions. General Scott had not intended to attack the enemy in the absence of Worth's division, which had not yet arrived. A movement of Lieutenant Franklin Gardner, re-enforced later by the mounted rifles under Major Edwin Vose Sumner and a battalion of the First Artillery under Lieutenant-Colonel Childs, to occupy a position near the base of the Atalaya, provoked a sharp conflict. General Santa Anna, being at the front, ordered re-enforcements. Colonel Thomas Childs withdrew, having advanced under a misapprehension. The American loss was ninety-seven, killed and wounded. General Scott returned to Plan del Rio and issued the following order: "HEADQUARTERS OF THE ARMY, "PLAN DEL RIO, _April 17, 1847_. "GENERAL ORDERS NO. 111.