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Samuel Whittemore's avatar

Operation Just Cause Grok: “**Operation Just Cause (Panama, December 1989–January 1990) – Summary (No Citations)**

**U.S. Order of Battle – Key Army Units**

The operation involved about 27,000 troops under Joint Task Force South (XVIII Airborne Corps). Major Army elements:

- XVIII Airborne Corps (overall ground command)

- 82nd Airborne Division (main airborne assault force: multiple parachute infantry regiments, Sheridan tanks, artillery, aviation)

- 7th Infantry Division (Light) from Fort Ord, CA (primary follow-on force: infantry regiments, artillery, support units)

- 193rd Infantry Brigade (in-place Panama force: parachute and light infantry, armor attachments)

- Attachments: 75th Ranger Regiment (initial assaults), 5th Infantry Division elements, Special Forces, aviation, engineers, MPs, and support units.

**Army Air Flow Problems from Fort Ord Due to Weather**

The 7th Infantry Division faced major deployment delays from Fort Ord, California. Dense ground fog and poor visibility slowed ground convoys to airfields. Holiday traffic and hastily assembled aircraft added mismatches in equipment and load plans. Low clouds/fog also affected en route and landing operations in Panama, though the overall timeline held with H-Hour at 0100 on December 20.

**USMC LAV Unit Involvement**

Marine participation was small (~800–1,000 total). A Light Armored Vehicle (LAV-25) company from 2nd Light Armored Infantry Battalion was attached to the Army's 193rd Infantry Brigade. It provided armored reconnaissance, mobility, and firepower during urban and ground operations in Panama City and surrounding areas.

**Major Robert Neller's Involvement**

Yes — Major Robert B. Neller (later the 37th Commandant of the Marine Corps, 2015–2019) commanded the Marine Corps Security Force Company, Panama. He led Marine security efforts during the buildup, invasion (Just Cause), and post-invasion stability phase (Promote Liberty), protecting U.S. facilities and supporting joint operations.”.

Greg lund's avatar

I know a fmr SEAL that was in on that operation

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