U.S. Marine Corps Executive and Leadership Team

October, 2026

Leadership Overview

U.S. Marine Corps has 10 executives leading key functions including strategic operations, information technology, financial management, and training development.

Committed to global security and rapid response, U.S. Marine Corps maintains a rigorous standard of excellence while executing complex multi-domain missions across land, sea, and air environments.

Leadership Roles at U.S. Marine Corps

  • Chief Financial Officer, Blount Island Command - Peter Lawless
  • Executive Officer (Chief Operating Officer) - George Chronis
  • Chief of Staff - Scott Helminski
  • Chief Information Officer - David DiEugenio
  • Training & Education Command Chief of Staff - Benjamin Venning
  • Assistance Chief of Staff - Mark Phifer
  • Director, Information Technology & Chief Information Officer II, Marine Expeditionary Force - David Rowe
  • Chief of Staff 2d Maw - Caveman Holzworth
  • Reserve Chief of Staff, 2d Marine Division - Tom Montgomery
  • Training Command Chief of Staff - Kevin Digman
  • Peter Lawless - Chief Financial Officer, Blount Island Command

    Peter Lawless, the Chief Financial Officer, Blount Island Command at U.S. Marine Corps, manages fiscal resources and budgetary allocations to support logistics and equipment maintenance. Overseeing the financial health of the command, the Chief Financial Officer, Blount Island Command ensures that funding aligns with the strategic requirements of maritime prepositioning programs. This leadership role involves rigorous auditing and resource optimization to maximize the utility of available assets. By maintaining strict fiscal discipline, Peter Lawless supports the long-term sustainability of critical supply chains and equipment readiness. Lawless directs the allocation of capital toward essential maintenance projects, ensuring that the command remains prepared for rapid mobilization. Through precise financial planning and oversight, the Chief Financial Officer, Blount Island Command secures the necessary resources to maintain operational superiority in support of global expeditionary missions.

    George Chronis - Executive Officer (Chief Operating Officer)

    George Chronis, the Executive Officer (Chief Operating Officer) at U.S. Marine Corps, directs the daily operational activities and ensures the alignment of organizational goals. Overseeing the execution of strategic plans, the Executive Officer (Chief Operating Officer) manages the internal processes that drive mission success. This leadership role involves coordinating across multiple departments to ensure that operational requirements are met with efficiency and precision. By optimizing the use of resources and personnel, George Chronis enhances the overall performance of the organization. Chronis maintains a focus on operational excellence, ensuring that all activities support the broader mission of the force. Through the strategic oversight of daily operations, the Executive Officer (Chief Operating Officer) sustains the high level of readiness and effectiveness required for the successful execution of complex missions in diverse and challenging environments.

    Scott Helminski - Chief of Staff

    Scott Helminski, the Chief of Staff at U.S. Marine Corps, directs administrative operations and coordinates cross-functional efforts to ensure mission readiness. Overseeing the integration of staff activities, the Chief of Staff aligns internal processes with broader defense objectives. This leadership role involves managing complex organizational workflows to support rapid deployment capabilities across global theaters. By streamlining communication channels between command elements, Scott Helminski optimizes the efficiency of tactical planning. Helminski maintains focus on operational agility, ensuring that all staff departments remain synchronized with the evolving requirements of the force. Through rigorous oversight of daily administrative functions, the Chief of Staff sustains the high standards of readiness required for modern expeditionary warfare, ultimately strengthening the overall effectiveness of the organization in diverse operational environments.

    David DiEugenio - Chief Information Officer

    David DiEugenio, the Chief Information Officer at U.S. Marine Corps, architects the digital infrastructure necessary for secure communication and data management. Overseeing the modernization of network systems, the Chief Information Officer ensures that information superiority remains a core component of tactical success. This leadership role involves implementing advanced cybersecurity protocols to protect critical assets from emerging digital threats. By integrating cutting-edge technology into existing command structures, David DiEugenio enhances the speed and accuracy of decision-making processes across all operational levels. DiEugenio drives the digital transformation of the force, ensuring that information systems remain resilient during high-stakes deployments. Through the strategic deployment of communication networks, the Chief Information Officer supports the seamless exchange of intelligence, which is vital for maintaining a competitive advantage in complex global security landscapes.
    David DiEugenio

    Benjamin Venning - Training & Education Command Chief of Staff

    Benjamin Venning, the Training & Education Command Chief of Staff at U.S. Marine Corps, directs the development and implementation of comprehensive training programs. Overseeing the curriculum design and instructional standards, the Training & Education Command Chief of Staff ensures that personnel receive the highest quality preparation for diverse combat scenarios. This leadership role involves coordinating with educational institutions to integrate modern pedagogical techniques into the training pipeline. By refining the standards of professional development, Benjamin Venning enhances the overall readiness and skill sets of the force. Venning manages the logistical requirements of training facilities, ensuring that resources are available to support continuous learning initiatives. Through the strategic oversight of educational programs, the Training & Education Command Chief of Staff builds a foundation of excellence that prepares the force for the challenges of modern, multi-domain warfare.

    Mark Phifer - Assistance Chief of Staff

    Mark Phifer, the Assistance Chief of Staff at U.S. Marine Corps, supports the execution of strategic initiatives and operational planning. Overseeing the coordination of specialized staff functions, the Assistance Chief of Staff ensures that departmental goals remain aligned with the broader mission objectives. This leadership role involves facilitating communication between senior command and subordinate units to improve operational cohesion. By providing analytical support and administrative guidance, Mark Phifer enhances the decision-making capacity of the leadership team. Phifer manages the implementation of tactical directives, ensuring that all operational requirements are met with precision and speed. Through the diligent oversight of staff activities, the Assistance Chief of Staff contributes to the overall efficiency of the organization, ensuring that the force remains prepared to execute complex missions across various geographic theaters of operation.

    David Rowe - Director, Information Technology & Chief Information Officer II, Marine Expeditionary Force

    David Rowe, the Director, Information Technology & Chief Information Officer II, Marine Expeditionary Force at U.S. Marine Corps, manages the technical infrastructure for expeditionary operations. Overseeing the deployment of tactical communication systems, the Director, Information Technology & Chief Information Officer II, Marine Expeditionary Force ensures that field units maintain connectivity in austere environments. This leadership role involves integrating mobile technology and satellite networks to support real-time situational awareness. By optimizing the performance of information systems, David Rowe enables the rapid transmission of critical data during high-tempo operations. Rowe drives the adoption of resilient networking solutions, ensuring that the force remains capable of operating in contested digital spaces. Through the strategic management of information technology, the Director, Information Technology & Chief Information Officer II, Marine Expeditionary Force sustains the operational effectiveness of the expeditionary force in diverse global theaters.

    Caveman Holzworth - Chief of Staff 2d Maw

    Caveman Holzworth, the Chief of Staff 2d Maw at U.S. Marine Corps, directs the administrative and operational functions of the aviation wing. Overseeing the coordination of flight operations and maintenance support, the Chief of Staff 2d Maw ensures that aviation assets remain mission-ready. This leadership role involves managing the complex logistics required to sustain air power in support of ground forces. By streamlining the internal processes of the wing, Caveman Holzworth enhances the responsiveness of aviation units to changing tactical requirements. Holzworth coordinates with other command elements to ensure that air support is integrated effectively into broader mission plans. Through the rigorous oversight of wing operations, the Chief of Staff 2d Maw maintains the high standards of readiness necessary for the successful execution of complex aerial missions across various operational environments.

    Tom Montgomery - Reserve Chief of Staff, 2d Marine Division

    Tom Montgomery, the Reserve Chief of Staff, 2d Marine Division at U.S. Marine Corps, manages the integration and readiness of reserve forces within the division. Overseeing the training and mobilization schedules, the Reserve Chief of Staff, 2d Marine Division ensures that reserve personnel maintain the same operational standards as active-duty counterparts. This leadership role involves coordinating the transition of reserve units into active service during periods of heightened demand. By optimizing the readiness of reserve assets, Tom Montgomery enhances the overall surge capacity of the division. Montgomery directs the administrative support required to maintain the proficiency of reserve personnel, ensuring that they remain prepared for rapid deployment. Through the strategic management of reserve resources, the Reserve Chief of Staff, 2d Marine Division strengthens the force's ability to respond to large-scale contingencies and operational requirements.

    Kevin Digman - Training Command Chief of Staff

    Kevin Digman, the Training Command Chief of Staff at U.S. Marine Corps, directs the operational support for large-scale training initiatives. Overseeing the logistical requirements of training exercises, the Training Command Chief of Staff ensures that all necessary resources are available to support the development of personnel. This leadership role involves coordinating with various training centers to standardize instructional quality and safety protocols. By managing the administrative framework of the command, Kevin Digman facilitates the efficient execution of training programs that prepare the force for modern combat. Digman drives the continuous improvement of training processes, ensuring that the curriculum remains relevant to evolving tactical needs. Through the strategic oversight of training operations, the Training Command Chief of Staff builds a robust foundation of readiness that supports the long-term success of the organization in diverse global missions.

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    Frequently Asked Questions Regarding U.S. Marine Corps Top Executives and Leadership Team

    Who leads U.S. Marine Corps?
    U.S. Marine Corps is led by Peter Lawless (Chief Financial Officer, Blount Island Command), along with executives such as George Chronis (Executive Officer (Chief Operating Officer)) and Scott Helminski (Chief of Staff).
    Who is part of U.S. Marine Corps’s executive team?
    The executive team of U.S. Marine Corps includes leaders such as Peter Lawless (Chief Financial Officer, Blount Island Command), George Chronis (Executive Officer (Chief Operating Officer)), Scott Helminski (Chief of Staff) and other senior executives.
    How many executives does U.S. Marine Corps have?
    U.S. Marine Corps has 10 executives leading key business areas.
    What roles are included in U.S. Marine Corps’s leadership team?
    The leadership team of U.S. Marine Corps includes roles such as Chief Financial Officer, Blount Island Command, Executive Officer (Chief Operating Officer), Chief of Staff, Chief Information Officer, Training & Education Command Chief of Staff.