15 Oct The Mosaic General: Lieutenant General Calvert Worth and the New Caribbean Joint Task Force
By,
LCDR Jesús D. Romero, USN (Ret.). Senior Fellow & Co-Founder, MSI²
I. Introduction — A Strategic Reorientation in Defense of the American People
The establishment of the Caribbean Joint Task Force (CJTF) under the operational command of Lieutenant General Calvert C. Worth, Commanding General of the II Marine Expeditionary Force (II MEF), represents a deliberate reorientation of the United States’ strategic priorities in the Western Hemisphere. For the first time in years, Washington’s defense posture in the Caribbean shifts from containment to proactive deterrence, anchored in a national commitment to the security and well-being of the American people.
II. II MEF — The Expeditionary Center of Gravity
Headquartered at Camp Lejeune, North Carolina, the II Marine Expeditionary Force (II MEF) remains one of the most powerful and active formations within the United States Marine Corps. Its designation as the operational core of the Caribbean Joint Task Force is not a reactivation, but a strategic realignment linking the Corps’ amphibious agility with SOUTHCOM’s interagency intelligence network.
III. From Multidomain Operations to MOSAIC Warfare
MOSAIC Warfare, developed by DARPA’s Strategic Technology Office, redefines combat as a living network of interchangeable elements — sensors, shooters, decision nodes, and effect modules — that can be dynamically recomposed to overwhelm the adversary (DARPA, n.d.; National Defense Magazine, 2018). This concept operationalizes the U.S. notion of decision-centric warfare, shifting the focus from platform superiority to decision superiority (Clark et al., 2020).
IV. The Caribbean as an Integrated Battlespace
Under Worth’s leadership, the Caribbean ceases to be a mere transit corridor and becomes a networked battlespace. The new Joint Task Force fuses the Marine Corps’ expeditionary ethos with SOUTHCOM’s interagency intelligence depth, enabling persistent maritime awareness, distributed command cells, and rapid responses to narcoterrorism and terrorism operations. This architecture also strengthens Humanitarian Assistance and Disaster Response (HADR) capacity, aligning security with regional stability.
V. Strategic Message — From Containment to Forward Defense
The creation of the CJTF reflects a realignment of national defense priorities at the executive level. After years of diplomatic management, Washington reaffirms that American security begins beyond its shores. As SOUTHCOM Commander Admiral Alvin Holsey stated, the Task Force will detect, disrupt, and dismantle illicit networks faster and at greater depth, together with partner nations (U.S. Southern Command, 2025). This doctrine revives the principle of 21st-century deterrence through technology: deterrence not by declaration, but by operational integration.
Across the hemisphere, several senior officers agree that strengthening deterrence requires a collective vision. Admiral (Ret.) Luis Calisto Giampietri, former Commander of Pacific Operations of Peru, expressed it precisely:
“A multinational coalition with South American allies would sustain the joint effort, share costs, and transform diplomatic cooperation into operational capability. Beyond politics, it would pave the way toward doctrines compatible with NATO and genuine regional readiness.”
Complementing this view, Rear Admiral (Ret.) Carlos Molina Tamayo, former officer of the Venezuelan Navy and graduate of the U.S. Naval War College and Naval Postgraduate School, affirms that reestablishing the alliance between Washington and Caracas is essential for hemispheric stability:
“Venezuela and the United States will once again be the great allies the free world requires. The multidomain warfare actions promoted by President Trump not only neutralize state-sponsored narcoterrorism but also open the path to the restoration of Venezuelan democracy and the integral defense of the Western Hemisphere.”
The convergence of these visions — one Peruvian and the other Venezuelan — projects unprecedented hemispheric legitimacy. Both reflect the consensus of a generation of Latin American officers trained under the principle of interoperability with U.S. forces: shared defense, common values, and coordinated action against transnational crime.
VI. Leadership and the MOSAIC Command Ethos
Lieutenant General Calvert Worth’s leadership embodies the Marine Corps motto —Improvise, Adapt, Overcome— redefined for an era of distributed operations. His philosophy emphasizes mission command, AI-assisted decision tools, integration with special operations and cyber commands, and interoperability with allied forces. Worth continues the naval expeditionary heritage where sea control and land projection remain indivisible instruments of deterrence.
VII. Implications for Hemispheric Security
The integration of II MEF into the Caribbean Joint Task Force sends a clear message to the hemisphere: the era of passive observation is over. State-sponsored narcoterrorist entities and foreign agents will now face multidomain precision pressure. For allies, it reaffirms America’s commitment to cooperation and transparency; for adversaries, it restores deterrence through persistent presence.
VIII. Conclusion — The Mosaic General
The appointment of Lieutenant General Worth and II MEF at the heart of the Caribbean Joint Task Force is more than an organizational decision: it is a strategic declaration. It affirms that the United States will confront transnational threats not with rhetoric but with readiness. MOSAIC Warfare provides the architecture; leadership provides the will. Together, they embody forward defense and hemispheric integrity.
Author’s Note
Throughout my career, I have had the honor of serving in joint task forces such as the Joint Task Force–Full Accounting (JTF-FA) and the Joint Interagency Task Force South (JIATF-South). In those commands, I learned that the true power of the United States lies not only in its firepower but in its integration — agencies, forces, and allies acting as one.
The Caribbean Task Force represents that same philosophy. Deterrence is not a posture; it is a sustained presence. And presence, when exercised with purpose, is power.
References
Clark, B., Patt, D., & Schramm, H. (2020). Mosaic warfare: Exploiting artificial intelligence and autonomous systems to implement decision-centric operations. Center for Strategic and Budgetary Assessments. https://csbaonline.org/uploads/documents/Mosaic_Warfare.pdf
DARPA. (2017, August 4). Strategic Technology Office outlines vision for “Mosaic Warfare”. U.S. Department of Defense. https://www.darpa.mil/news/2017/sto-mosaic-warfare
DARPA. (n.d.). DARPA tiles together a vision of Mosaic Warfare. U.S. Department of Defense. https://www.darpa.mil/news/mosaic-warfare
National Defense Magazine. (2018, November 16). DARPA pushes “Mosaic Warfare” concept. https://www.nationaldefensemagazine.org/articles/2018/11/16/darpa-pushes-mosaic-warfare-concept
RAND Corporation. (2021). Distributed kill chains: Drawing insights for Mosaic Warfare from the future of war. https://www.rand.org/pubs/research_reports/RRA573-1.html
U.S. Southern Command. (2025, October 10). New joint task force established to lead SOUTHCOM counter-narcotics operations [Press release]. https://www.southcom.mil/News/PressReleases/Article/4323046/new-joint-task-force-established-to-lead-southcom-counter-narcotics-operations/
The opinions expressed in this article are those of the author and do not necessarily reflect the views of the Miami Strategic Intelligence Institute (MSI²).