The Triumvirate then drew up and decreed a constitution of its own, providing for the periodical election of the Executive by a mixed assembly of notables and of representatives of different towns, who should also act as a legislative council until the convention of a National Congress.
These measures were far from satisfying the requirements of the democratic party, who called for the immediate convocation of a National Congress, which would give form and life to the Republic, though government was still carried on in the name of the King. The Triumvirate opposed the convocation of a Constituent Assembly, considering the time for this had not yet come. Hence came about a fourth political evolution, more dangerous and more important than any of the others.
San Martin returned to his native country a man unknown, but with a certain repute as a brave soldier and a skilful tactician. His comrade, Alvear, on the contrary, came of a family already well known in the River Plate. Ambitious of glory and of power, and of a brilliant imagination, he was a great contrast to San Martin, and assumed an attitude of protection to him, recommending him to the Government of the United Provinces as a good soldier.
Eight days after his arrival San Martin was confirmed in his rank as a lieutenant-colonel, and was entrusted with the organization of a squadron of cavalry, in which Alvear held the rank of major and Zapiola that of captain. This was the origin of the famous regiment of mounted grenadiers, which fought in all the battles of the War of Independence, which gave to America nineteen generals and more than two hundred officers, and of which, after shedding its blood and spreading its bones across the continent from La Plata to Pichincha, a remnant returned under the command of a trooper who in thirteen years had fought his way up to the rank of colonel, and brought back their old standard with them.
