The troops that had been engaged at Contreras, and even then on their way to that battle-field, were moved by a causeway west of, and parallel to the one by way of San Antonio and Churubusco. It was expected by the commanding general that these troops would move north sufficiently far to flank the enemy out of his position at Churubusco, before turning east to reach the San Antonio road, but they did not succeed in this, and Churubusco proved to be about the severest battle fought in the valley of Mexico. General Scott coming upon the battle-field about this juncture, ordered two brigades, under Shields, to move north and turn the right of the enemy. This Shields did, but not without hard fighting and heavy loss. The enemy finally gave way, leaving in our hands prisoners, artillery and small arms. The balance of the causeway held by the enemy, up to the very gates of the city, fell in like manner. I recollect at this place that some of the gunners who had stood their ground, were deserters from General Taylor′s army on the Rio Grande.
Both the strategy and tactics displayed by General Scott in these various engagements of the 20th of August, 1847, were faultless as I look upon them now, after the lapse of so many years. As before stated, the work of the engineer officers who made the reconnoissances and led the different commands to their destinations, was so perfect that the chief was able to give hisVol. I.—10
