Militiamen from south of the Bay, led by Mexican Captain Joaquin de la Torre, had joined with Padilla's irregulars and now numbered about seventy. Ford's men positioned themselves in a grove of trees and opened fire when the enemy charged on horseback, killing one Californio and wounding another. During the ensuing long-range battle, William Todd and his companion escaped from the house where they were being held and ran to the Bears. The Californios disengaged from the long-range fighting after suffering a few wounded and returned to San Rafael. A Californian militiaman reported that their muskets could not shoot as far as the rifles used by some Bears. This was the only battle fought during the Bear Flag Revolt. The deaths of Cowie and Fowler, as well as the lethal battle, raised the anxiety of both the Californios, who left the area for safety, and the immigrants, who moved into Sonoma to be under the protection of the muskets and cannon that had been taken from the Sonoma Barracks. This increased the number in Sonoma to about two hundred. Some immigrant families were housed in the Barracks, others in the homes of the Californios. Having learned of Ford's request for volunteers to defend Sonoma and hearing reports that General Castro was preparing an attack, Frémont left his camp near Sutter's Fort for Sonoma on June 23. With him were ninety men – his own party plus trappers and settlers under Samuel J. Hensley. Frémont would say in his memoirs that he wrote a letter of resignation from the Army and sent it to his father-in-law Thomas Hart Benton in case the government should wish to disavow his action. They arrived at Sonoma in the early morning of the 25th and by noon were on their way to San Rafael accompanied by a contingent of Bears under Ford's command. They arrived at the former San Rafael mission but the Californios had vanished. The rebels set up camp in the old mission and sent out scouting parties. On Sunday the 28th a small boat was spotted coming across the bay. Kit Carson and some companions went to intercept it. It held twin brothers Francisco and Ramón de Haro, their uncle José de la Reyes Berreyesa, and an oarsman (probably one of the Castro brothers from San Pablo) – all unarmed. The Haro brothers and Berreyesa were dropped off at the shoreline and started on foot for the mission. All three were shot and killed.