With roughly 2,500 troops per Expeditionary Unit, US Marines can deploy shipboard security teams and capture coastal missile batteries to reopen the Strait of Hormuz, securing 20 per cent of the global oil trade.

To prevent immediate hijackings, the Pentagon can deploy armed Marine security detachments directly aboard vulnerable commercial tankers transiting the strait.

Marines use AH-1Z Viper attack helicopters launched from amphibious assault ships to actively hunt and destroy Iranian Islamic Revolutionary Guard Corps fast-attack boats.

Using their core amphibious assault capabilities, Marines can capture highly fortified Iranian coastal islands like Qeshm to eliminate radar and missile sites.

Under the new Expeditionary Advanced Base Operations strategy, Marines can rapidly set up temporary, mobile missile batteries on isolated islands to control the sea space.

While the Navy handles deep-water sweeping, Marine reconnaissance teams are specifically trained to locate and neutralise shallow-water mines threatening the immediate coastline.

Marine precision fire teams and stealth F-35B fighter jets can coordinate to destroy hidden anti-ship cruise missile batteries stationed along Iran's rocky southern coast.

By executing these combined operations, a standard Marine Expeditionary Unit can force the strait open, securing a route that handles 21 million barrels of oil daily.