On the commencement of the Mexican war, circumstances prevented General Scott from assuming the immediate command of the invading force. He was subsequently ordered to the seat of the war; and after a series of operations, admitted to be the most brilliant in point of science known to modern warfare, he won what were supposed to be impregnable, the castle and the town of Vera Cruz. This triumph was announced on the 29th of March. The siege occupied fifteen days, and was attended with little loss on the side of the Americans. On the 17th of April, Scott, advancing upon Mexico, issued an order for the attack of Cerro Gordo--in which every event that was ordered and foreseen seems now to be prophecy; and on the next day he carried that Thermopylae of Mexico. The battle was one of the most brilliant in the American annals. The orders of Scott, previously given, secure the glory of the triumph for himself and his army. On the 19th, Jalapa was occupied, and on the 22d Perote. In these triumphs the army acquired great quantities of munitions. The city of Puebla was occupied on the 15th of May: Ten thousand prisoners, seven hundred cannon, ten thousand stand of arms, and thirty thousand shells and shot were, in the course of these operations, the fruits of American skill and valor. But even these achievements were thrown into the shade by the glorious triumphs in the vicinity of Mexico. The bloody contests at the intrenchments of Contreras, the fortifications of Cherubusco and the castle of Chapultepec, and finally the capture of Mexico, are of so recent occurrence, and so familiar in all their details to the public, that we do not deem it necessary to narrate them. Cut off for fifty days from all communications with Vera Cruz, the veteran Scott won, with his feeble and greatly diminished force, and against defenses deemed impregnable, triumphs that have thrown immortal glory around the arms of his country.