On April 16, 1965, growing dissatisfaction generated another military rebellion on April 24, 1965 that demanded Bosch's restoration. The insurgents, reformist officers and civilian combatants loyal to Bosch commanded by Colonel Francisco Caamaño, and who called themselves the Constitutionalists, staged a coup, seizing the national palace. Immediately, conservative military forces, led by Wessin and calling themselves Loyalists, struck back with tank assaults and aerial bombings against Santo Domingo. A few days of upheaval saw heavy fighting in the streets of the city and a pitched battle fought on the main bridge across the Ozama River, where civilians used guns supplied by their military allies to repulse the tank corps loyal to the military government, preventing it from entering the capital.