Inshore Undersea Warfare Group One

• Origins in the Cold War: Inshore Undersea Warfare Group One (IUWG-1) was established during the heightened tensions of the Cold War, focusing on coastal and harbor defense against potential Soviet underwater threats. • Harbor Defense Mission: IUWG-1 specialized in providing mobile, rapidly deployable harbor defense units, capable of detecting and deterring enemy submarines, swimmers, and small boats. • Vietnam War Service: IUWG-1 units were deployed to Vietnam, where they played a critical role in protecting ports, anchorages, and naval assets from infiltration and sabotage. • Use of Advanced Sonar: The group utilized cutting-edge sonar and underwater detection technologies, including the deployment of hydrophones and magnetic anomaly detectors. • Integration with Naval Reserve: IUWG-1 was unique for its integration of Navy Reservists, allowing for rapid expansion and deployment during times of crisis. • Operation Earnest Will: Members of IUWG-1 participated in Operation Earnest Will in the Persian Gulf, protecting U.S. and allied shipping during the Iran-Iraq War. • Modular Deployments: IUWG-1 units could be deployed in modular teams, making them highly flexible for a variety of missions—everything from anti-terrorism to disaster response. • Transition to Maritime Expeditionary Security: In the early 2000s, IUWG-1 was reorganized into Maritime Expeditionary Security Groups, reflecting evolving threats and missions in the Global War on Terror. • Decorated Service Members: Personnel from IUWG-1 have received numerous commendations, including the Navy Unit Commendation and Meritorious Unit Commendation, for their service in conflict zones. • Legacy in Modern Operations: The tactics, techniques, and procedures developed by IUWG-1 continue to influence current U.S. Navy harbor security and expeditionary warfare operations worldwide.