text: At daybreak (05:00) on Saturday, 11 June, Spanish guerrillas opened fire on the Marines at Camp McCalla from the surrounding brush.  Firing a fusillade from their rapid-firing Mauser rifles, the guerrillas advanced towards the camp.  After heavy fighting, and supported by the reserve company (Company C) the Marines drove the enemy back into the bush, pursuing the enemy until the chase was abandoned at dark.  Two pickets on outpost duty, Privates William Dumphy and James McColgan, who were posted as an early-warning patrol 100 yards ahead of the "Crossroads" forward outpost were later found dead, shot and cut numerous times in the face and body.  Their weapons, shoes, belts, and part of their clothing had been taken.
  This was the beginning of what Huntington's executive officer, Major Henry Clay Cochrane, later called "its 100 hours of fighting".  At Camp McCalla, the Marines dug in and began firing at the concealed Spaniards, aided by three 3-inch field pieces and two additional 6 mm Colt–Browning machine guns which had been landed on 12 June by the . Gunfire from Marblehead passed overhead and impacted in the nearby hills.  Wearing large palm leaves tied to their uniforms for camouflage, and firing smokeless powder cartridges, the Spanish forces were difficult to locate as they moved from bush to bush in the dense undergrowth.