Date

7-21-2026

Department

College of Arts and Sciences

Degree

Doctor of Philosophy in History (PhD)

Chair

Broom, John Thomas

Keywords

SEALs, UDT, NCDU, World War Two, Korea, Vietnam, Grenada, Panama, Tarawa

Disciplines

History

Abstract

This dissertation will examine the evolution of U.S. Navy SEAL doctrine, mission scope, and overall strategic role from their formal establishment in 1962 through the Cold War interventions in Grenada (1983) and Panama (1989). It will argue that the SEALs transformed from a more experimental counterinsurgency force into a much stronger and more strategically significant instrument of U.S. military policy, shaped by the combat experience, institutional challenges, and ever-evolving geopolitical demands. Drawing upon several primary sources, including archival records, official military histories, several oral interviews, and doctrinal publications, this study employs a qualitative, thematic methodology to analyze patterns in operational adaptation, cultural development, and the wide understanding of strategic integration. The Dissertation gives particular attention to the Vietnam War, which was the crucible that forged SEAL doctrine and identity characterized by decentralized command, small-unit autonomy, and intelligence-driven operations. The dissertation further argues that the post-Vietnam period (1973–1983) was a critical phase of institutional retrenchment and doctrinal preservation. Despite reduced resources and marginalization within a much larger, more conventional Navy focused on blue-water operations, SEAL teams refined their capabilities through training, maritime specialization, and emerging counterterrorism roles. Operation Urgent Fury in Grenada exposed significant deficiencies in joint planning and intelligence coordination, serving as a vital doctrinal stress test that highlighted the different strengths and limitations of SEAL operational practice. Subsequent reforms also culminated in a much more effective and integrated employment of SEAL forces during Operation Just Cause in Panama, demonstrating the overall maturation of doctrine and the successful incorporation of lessons learned. Ultimately, this study concludes that the evolution of the SEALs reflects a broader shift in U.S. military policy toward flexible, rapid-response forces capable of executing limited, politically sensitive interventions, marking Naval Special Warfare as a central component of what would become the late Cold War strategic power.

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