From the thesis abstract: "Since 1775, the United States Marine Corps has conducted operations all over the world. From early roles of naval gunnery, guarding ships, and conducting early amphibious assaults, to its present day role as an amphibious force in readiness, many engagements have shaped the Marine Corps. In between the end of the nineteenth and beginning of the twentieth centuries, the Marine Corps' role expanded significantly. From the Spanish-American War and continuing through the Boxer Rebellion in 1900, the Marine Corps continued to adapt towards its current role as America's force in readiness. Specifically, the Boxer Rebellion was the first major conflict in which the Marine Corps participated that employed large-scale forward units operating overseas to a different conflict in another country. The expeditionary mindset of the Marine Corps during the Boxer Rebellion is strikingly similar to today's global employment of Marines: forward-deployed and forward-based and operating throughout the world in 146 countries, ready to support United States interests and protect Americans abroad."