Emboldened by these successes, the Captain-General again shifted his position, and issued an order, to be made the excuse for an outrage against American shipping, which was severely to tax the friendliness of international relations. The Spanish government was ever haunted by the bugbear of American intervention, and doubtless the decree in question was issued as a preventive against such action, for the Spanish well knew that should such intervention once take place their cause would be irrevocably lost, and with it their dominion over Cuba. The decree provided for the confiscation on the high seas of any and all vessels carrying either men, arms or ammunition or all three, or indeed anything which might be construed as intended for material aid to the revolutionists, and further provided that "all persons captured on such vessels without regard to their number will be immediately executed." Viewed in the calm light of history this decree would seem bound, if enforced, to be almost suicidal to the Spanish interests, being in opposition to law and justice, and in express violation of existing treaty obligations between Spain and the United States, and thus bound to bring a storm of protest from the United States government. As if this were not enough, Dulce followed this action by another decree, promulgated on April 1, which prohibited the transfer of property, except by the direct consent of the government, and this prohibition included the sale of produce of all sorts, stocks, shares in mercantile projects, and real estate, together with many minor provisions; while by a third decree, which shortly followed, he ordered the confiscation of the estates of American citizens who were suspected of sympathy or complicity with the revolutionists. Naturally, the United States government made a strong protest against such summary action, rightly declaring it to be in violation of the provisions of the treaty of 1795. The Cuban troops now began a more or less concentrated attack on Trinidad, and to relieve the pressure at this point, the Spanish sent a large force toward Puerto Principe, hoping to weaken the Cuban army at the former place, because of the necessity of withdrawing men to combat the Spanish army at the latter. The Spanish government also sought to offset the damage and destruction done by the insurgents to property of loyalists by issuing a decree proclaiming their intention to confiscate the property of all individuals who were absent from home without a governmental excuse--which would of course include all landowners who were fighting in the Cuban army--and providing for a detail of men to protect against the revolutionists every estate thus taken.