Meanwhile Grant had been made regimental quartermaster, charged with the duty of seeing that the troops were furnished with proper food and caring for all property and supplies. Heartily as he disliked this task, which was not only dull and difficult, but also bade fair to prevent him from taking active part in the prospective battles, he set to work with the utmost energy. By the time the enemy began to dispute the road, he had overcome the immense difficulty of supplying troops on a march through a tropical country and was prepared to take part in any fighting that occurred. But the Mexicans gathered at TALL TREES on May 8, 1846, were not prepared for a serious encounter. They fired at the invaders, but their short-range cannon loaded with solid shot rarely reached the Americans, and when a ball did come rolling towards them on the ground, the troops merely stepped to one side and allowed the missile to pass harmlessly through their opened ranks. After the American artillery reached the field, however, the enemy was driven from its position and the next day the advance was resumed to Resaca de la Palma, where stronger opposition was encountered. Grant was on the right wing of the army as it pressed forward through dense undergrowth to drive the Mexicans from the coverts in which they had taken shelter. It was impossible to give any exact orders in advancing through this jungle, and the men under Grant's command struggled forward until they reached a clearing where they caught sight of a small body of Mexicans. The young Lieutenant instantly ordered a charge and, dashing across the open ground, captured the party only to discover that they were merely stragglers left behind by other American troops who had already charged over the same ground. No one appreciated the humor of this exploit more than Grant. It reminded him, he said, of the soldier who boasted that he had been in a charge and had cut off the leg of one of the enemy's officers. "Why didn't you cut off his head?" inquired his commander. "Oh, somebody had done that already," replied the valiant hero.