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    UNITAS LXV

    UNITAS LXV

    UNITAS LXV    

    UNITAS, Latin for Unity, is the longest-running multinational maritime exercise in the world. A U.S.-sponsored joint exercise, UNITAS was conceived in 1959, with the first UNITAS (UNITAS I) taking place in 1960. UNITAS has occurred every year since then. When it started, U.S. and partner nation organizers decided to use Roman numerals to highlight the significance of a multinational maritime exercise designed to increase interoperability and strengthen partnerships among participating maritime forces. Exercise documents and host country branding still feature Roman numerals today, more than 60 years later.

    Highlights

    UNITAS LXV Begins in Valparaíso, Chile

    UNITAS LXV Begins in Valparaíso, Chile
    09.02.24 | CPO John Fischer | COMFOURTHFLT
    Navy and Marine forces arrived in Valparaiso in support of UNITAS LXV (65), the world’s longest-running multinational maritime exercise in the...
    UNITAS 2023: SOLIDAREX

    UNITAS 2023: SOLIDAREX
    07.09.23 | Sgt Juan Carpanzano | USMCF-S
    U.S. Navy Sailors from Combat Logistics Battalion 8, Combat Logistics Regiment 2, 2nd Marine Logistics Group, in support of Special Purpose Marine...

    116 Featured Videos

    2nd Bn., 7th Marines participates in Exercise UNITAS 2024

    2nd Bn., 7th Marines participates in...
    09.10.24 | Cpl Logan Courtright | 1MD
    U.S. Marines with Golf Company, 2nd Battalion, 7th Marine Regiment, 1st Marine Division, participate in Exercise UNITAS at Puerto Aldea, Chile,...
    U.S. Marines conduct flight operations during UNITAS LXV

    U.S. Marines conduct flight operations...
    09.08.24 | Cpl Madisyn Paschal | USMCF-S
    U.S. Marines with 4th Marine Aircraft Wing, Marine Forces Reserve, conduct flight operations during UNITAS LXV in Santiago, Chile, Sept. 8, 2024....
    U.S. Marines and partner nations conduct dive operations during UNITAS LXV

    U.S. Marines and partner nations conduct...
    09.05.24 | Cpl Madisyn Paschal | USMCF-S
    U.S. Marines with Bravo Co., 4th Reconnaissance Battalion, 4th Marine Division and members of partner nation forces conduct dive operations during...
    UNITAS LXV

    UNITAS LXV
    09.13.24 | Cpl Madisyn Paschal | USMCF-S
    Allied and partnered nations conduct multilateral training during UNITAS LXV in Chile, Sept. 2 - 12, 2024. UNITAS, hosted by Chile this year, is...
    More Videos

    2,769 Featured Images

    U.S. Fourth Fleet Holds UNITAS 2025 Final Planning Conference

    U.S. Fourth Fleet Holds UNITAS 2025 Final...
    06.26.25 | CPO John Fischer | COMFOURTHFLT
    U.S. Naval Forces Southern Command / U.S. 4th Fleet Commander, Rear Adm. Carlos Sardiello, addresses planners from more than 20 countries during...
    U.S. Fourth Fleet Holds UNITAS 2025 Final Planning Conference

    U.S. Fourth Fleet Holds UNITAS 2025 Final...
    06.27.25 | CPO John Fischer | COMFOURTHFLT
    During the UNITAS 2025 Final Planning Conference in Jacksonville, Fla., lead delegates of participating nations' Navy and Marine planning teams...
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    47 Featured Stories

    U.S. Fourth Fleet Holds UNITAS 2025 Final...
    06.27.25 | Courtesy Story | COMFOURTHFLT
    U.S. Naval Forces Southern Command/U.S. 4th Fleet hosted the UNITAS 2025 final planning conference (FPC) from June 23-27, building upon the momentum established during the main-planning conference held in April and initial planning conference held in February. The FPC brought together representatives from the U.S. and partner nations to finalize plans for UNITAS 2025, the 66th iteration of the world’s longest-running multinational maritime...
    U.S. Marine Corps and Navy aircraft support UNITAS LXV in Chile

    U.S. Marine Corps and Navy aircraft...
    09.10.24 | CPT Mark Andries | USMCF-S
    U.S. Marine Corps F/A-18C Hornets, KC-130J Hercules and U.S. Navy P-8 Poseidon aircraft supported Exercise UNITAS LXV in Santiago, Chile.
    UNITAS LXV Begins in Valparaíso, Chile

    UNITAS LXV Begins in Valparaíso, Chile
    09.02.24 | CPO John Fischer | COMFOURTHFLT
    Navy and Marine forces arrived in Valparaiso in support of UNITAS LXV (65), the world’s longest-running multinational maritime exercise in the...
    More News Stories

    1 Featured Audio

    Marine Minute

    Marine Minute
    08.29.19 | Cpl Nathan Hall | DMA-M
    I'm Corporal Nathan Hall with your Marine Minute More than 3,000 service members from 11 countries kicked off UNITAS LX, the 60th iteration of...