Iran Conflict — 2026-03-20

Pentagon Accelerates 11th MEU Deployment; USS Boxer Departs San Diego Three Weeks Ahead of Schedule

The 11th MEU with approximately 2,500 Marines departed San Diego aboard USS Boxer on Wednesday, three weeks ahead of schedule. This follows the Japan-based USS Tripoli's departure with 2,200 Marines earlier this week. Pentagon officials describe the mission as 'laser-focused' on destroying Iran's offensive capabilities, while reporting notes Kharg Island, which handles 90% of Iran's oil exports, is being assessed for potential occupation or blockade. Total US forces in the region now exceed 50,000.

Analysis
The Mar 19 INTSUM covered initial Marine deployments; this update confirms the 11th MEU departed three weeks early, bringing total Marine reinforcement to ~4,700. Combined with the Kharg Island assessment, this represents the first concrete indicator of potential ground component planning.