Eight U.S. Marines were injured when an Iranian anti-ship cruise missile struck a vessel in the Strait of Hormuz on September 14, NBC News reported, citing three U.S. officials. The attack was not publicly disclosed at the time, and U.S. Central Command declined to comment.

The injured Marines — seven enlisted personnel and one officer serving with a battalion landing team — suffered smoke inhalation and concussion-like symptoms, including persistent headaches. Officials said possible traumatic brain injuries were diagnosed, but none of the eight was critically wounded. All eight returned to operational duty shortly after the attack.

The vessel was not a commissioned U.S. Navy warship, officials said. They declined to disclose its class or flag, describing it only as a “maritime vessel.”

The eight Marines were entered into the Defense Casualty Analysis System nearly 10 days after the strike. A U.S. defense official blamed the delay on “latent symptoms that often manifest days later” and said the tracking system lacks “real-time reporting capabilities.” The Pentagon separately updated its public wounded count to 37 this week, according to The Washington Post — an unexplained gap with the DCAS figure of 861 service members injured across the conflict. The U.S.-Iran war began February 28, 2026.