The artillery, consisting of one double fortified medium brass twelve-pounder, then opened on our encampment. The infantry in column advanced with the design of charging our lines, but were repulsed by a discharge of grape and canister from our artillery, consisting of two six-pounders, [called "The Twin Sisters."] The enemy had occupied a piece of timber within rifle-shot of the left wing of our army, from which an occasional interchange of small arms took place between the troops, until the enemy withdrew to a position on the bank of the San Jacinto, about three-quarters of a mile from our encampment, and commenced fortification. . . . . . . About nine o'clock on the morning of the 21st, the enemy were reinforced by 500 choice troops, under the command of General Cos, increasing their effective force to upwards of 1,500 men, whilst our aggregate force for the field numbered 783. At half-past three o'clock in the evening, I ordered the officers of the Texan army to parade their respective commands, having in the meantime ordered the bridge on the only road communicating with the Brazos, distant eight miles from our encampment, to be destroyed, thus cutting off all possibility of escape. Our troops paraded with alacrity and spirit, and were anxious for the conflict. Their conscious disparity in numbers seemed only to increase their enthusiasm and confidence, and heightened their anxiety for the conflict. . . . . . . Col. Sherman, with his regiment, having commenced the action upon our left wing, the whole line, at the centre and on the right, advancing in double-quick time, rung the war-cry, "_Remember the Alamo!_" received the enemy's fire, and advanced within point-blank shot before a piece was fired from our lines. Our line advanced without a halt, until they were in possession of the woodland and the enemy's breastwork, the right wing of Burleson's and the left wing of Millard's taking possession of the breastwork; our Artillery having gallantly charged up within seventy yards of the enemy's cannon, when it was taken by our troops. The conflict lasted about eighteen minutes from the time of close action until we were in possession of the enemy's encampment, taking one piece of cannon (loaded), four stands of colors, all their camp equipage, stores, and baggage. Our cavalry had charged and routed that of the enemy upon the right, and given pursuit to the fugitives, which did not cease until they arrived at the bridge which I have mentioned before--Captain Karnes, always among the foremost in danger, commanding the pursuers. The conflict in the breastwork lasted but a few moments; many of the troops encountered hand to hand, and not having the advantage of bayonets on our side, our riflemen used their pieces as war-clubs, breaking many of them off at the breech. The rout commenced at half-past four, and the pursuit by the main army continued until twilight. . . .