Captain Lee was dispatched to General Scott to request that a diversion might be made in front, simultaneously with the attack in rear. He succeeded in crossing the pedregal, and the necessary instructions were issued for a compliance with the request.
At three o'clock in the morning of the 20th, the movement under General Smith commenced. It was still raining, and so dark that an object could not be seen at the distance of six feet. The men were ordered to keep within touch, that the rear files might not go astray. Moving along the narrow path, through clayey mud, and over slippery rocks, they cautiously approached the Mexican position. Lieutenant Tower headed the column; Colonel Riley led the advance with his brigade; General Cadwalader followed; and the brigade of General Smith, temporarily commanded by Major Dimmick, of the 1st artillery, with the company of sappers and miners, brought up the rear. As the columns marched by a flank, the line was so extended, that the morning began to dawn before the head of General Cadwalader's brigade had reached the ravine.
The day broke heavily. Dark masses of clouds drifted across the sky, or rested gloomily over the distant mountains. The dusky lines of the force under Santa Anna were soon discovered making preparations to beat off the attack which they had anticipated. General Shields occupied the hacienda of Ensaldo and the hamlet of San Geronimo, and directed his men to build their fires, as if to cook their morning meal. The enemy in front were thus kept in ignorance of the movement going on in his rear, until it was too late to make a. successful diversion.
Having reached a favorable point nearly in rear of
