the overall American goal of isolating Cuba from outside support. It also provided a major boost to American morale because it was the first combat American servicemen had seen close to home. For their brave actions, all the Marines and sailors in the four small boats received the Medal of Honor. Land campaign The first American landings in Cuba occurred on June 10 with the landing of the First Marine Battalion at Fisherman's Point in Guantánamo Bay. This was followed on June 22 to 24, when the Fifth Army Corps under General William R. Shafter landed at Daiquirí and Siboney, east of Santiago, and established an American base of operations. A contingent of Spanish troops, having fought a skirmish with the Americans near Siboney on June 23, had retired to their lightly entrenched positions at Las Guasimas. An advance guard of U.S. forces under former Confederate General Joseph Wheeler ignored Cuban scouting parties and orders to proceed with caution. They caught up with and engaged the Spanish rearguard of about 2,000 soldiers led by General Antero Rubín who effectively ambushed them, in the Battle of Las Guasimas on June 24. The battle ended indecisively in favor of Spain and the Spanish left Las Guasimas on their planned retreat to Santiago. The U.S. Army employed Civil War–era skirmishers at the head of the advancing columns. Three of four of the U.S. soldiers who had volunteered to act as skirmishers walking point at the head of the American column were killed, including Hamilton Fish II (grandson of Hamilton Fish, the Secretary of State under Ulysses S. Grant), and Captain Allyn K. Capron, Jr., whom Theodore Roosevelt would describe as one of the finest natural leaders and soldiers he ever met. Only Oklahoma Territory Pawnee Indian, Tom Isbell, wounded seven times, survived. Regular Spanish troops were mostly armed with modern charger-loaded, 7mm 1893 Spanish Mauser rifles and using smokeless powder. The high-speed 7×57mm Mauser round was termed the "Spanish Hornet" by the Americans because of the supersonic crack as it passed overhead. Other irregular troops were armed with Remington Rolling Block rifles in .43 Spanish using smokeless powder and brass-jacketed bullets. U.S. regular infantry were armed with the .30–40 Krag–Jørgensen, a bolt-action rifle with a complex magazine. Both the U.S. regular cavalry and the volunteer cavalry used smokeless ammunition. In later battles, state volunteers used the .45–70 Springfield, a single-shot black powder rifle.