On the night of the 7th of May, with a force of over two thousand men and a supply train of two hundred and fifty wagons, General Taylor bivouacked on the plains about seven miles from Point Isabel. The whole of the country is extremely flat in the neighborhood of the river and on the road to Matamoros. In some places, broad thickets cover the levels, in others, wide prairies spread out dotted, here and there, with bushes and ponds. Early on the morning of Friday, the 8th, our camp was broken up and the little army set in motion towards the fort. About noon the scouts reported that the Mexicans were drawn up in our front, covering the road with all their forces; and as soon, therefore, as we reached the broad field of Palo Alto, a halt was ordered to refresh our men, and form our line of battle with due deliberation. Far across the prairie, at the distance of three quarters of a mile, were discerned the glittering masses of the enemy. Infantry and cavalry were ranged, alternately, on the level field and stretched out for more than a mile in length, backed by the wiry limbs of the tall trees from which the battle ground has taken its name. The left wing, composed of heavy masses of horse, occupied the road, resting on a thicket of chapparal, and flanked by ponds, while large bodies of infantry were discovered on the right, greatly outnumbering our own force and standing somewhat in a curved line, ready, as it were, to embrace our advancing columns. Orders were directly given on the American side to form the array for action. On our extreme right were ranged the fifth infantry under Colonel McIntosh; Major Ringgold's artillery; the third infantry commanded by Captain L. M. Morris; two eighteen pounders drawn by twenty yoke of oxen and commanded by Lieutenant Churchill, and lastly, the fourth infantry under Major Allen. The third and fourth regiments, formed the third brigade under Lieutenant Colonel Garland, and all these corps, together with two squadrons of dragoons led by Ker and May, composed the right wing under the orders of Colonel Twiggs. The left was composed of a battalion of artillery commanded by Colonel Childs, Captain Duncan's light artillery, and the eighth infantry under Captain Montgomery,--all constituting the first brigade under the orders of Lieutenant Colonel Belknap. The train, meanwhile, was packed near a pond under the direction of Captains Crossman and Myers, and protected by the squadron of Ker's dragoons.