Aware that resistance would be futile and with his crews in open revolt Hostile_encounter , Lucas surrendered Surrendering unconditionally .

Aware that his garrison could not withstand Defending an attack Attack by such a large force , Travis wrote Writing multiple letters pleading Request for more men and supplies Supply from Texas and from the United States , but the Texians were reinforced Cause_change_of_strength by fewer than 100 men because the United States had a treaty with Mexico , and supplying Supply men and weapons would have been an overt act of war Hostile_encounter .