Slight as the fighting was at Resaca, it completely satisfied the Mexicans, and for over three months they left the Americans severely alone. Meanwhile, General Taylor received reënforcements and in August, 1846, he proceeded against the town of Monterey, which the enemy had fortified with considerable skill and where they were evidently prepared to make a desperate resistance. Grant was again quartermaster, and the terrific heat which forced the army to do its marching at night or during the early hours of the morning, greatly increased his labors and severely tested his patience. Almost all the transportation animals were mules, and as very few of them were trained for the work, they were hard to load and even harder to handle after their burdens were adjusted. One refractory animal would often stampede all the rest, scattering provisions and ammunition in their tracks, driving the teamsters to the point of frenzy and generally hurling confusion through the camp. Even Grant, who never uttered an oath in his life, was often sorely tried by these exasperating experiences, but he kept command of his temper and by his quiet persistence brought order out of chaos in spite of beasts and men. His disappointment was bitter, however, when the attack on Monterey began and he found himself left without any assignment in the field. Lieutenant Meade, destined at a later date to command the Union forces at Gettysburg, was one of the officers entrusted with the preliminary reconnoissance against the city, and when the fighting actually commenced on September 21st, 1846, the deserted Quartermaster mounted his horse and rode to the scene of the action, determined to see something of the battle even if he could not take part in it. He arrived at the moment when his regiment was ordered to charge against what was known as the Black Fort, and dashed forward with his men into the very jaws of death. Certainly "someone had blundered," for the charge which had been intended merely as a feint was carried too far and scores of men were mowed down under the terrible fire of the enemy's guns. Temporary shelter was at last reached, however, and under cover of it the Adjutant borrowed Grant's horse; but he fell soon after the charge was renewed and the Colonel, noticing the impetuous Quartermaster, promptly appointed him to take the fallen officer's place. By this time the troops had fought their way into the town and the enemy, posted in the Plaza or Principal Square, commanded every approach to it. As long as the Americans kept in the side streets they were comparatively safe, but the moment they showed themselves in any of the avenues leading to the Plaza, they encountered a hail of bullets. This was serious enough; but at the end of two days the situation became critical, for the ammunition began to run low, and it was realized that, if the Mexicans discovered this, they would sweep down and cut their defenseless opponents to pieces.