Sergeant Talaiasi Labalaba, a Fijian member of the elite British Special Air Service (SAS), single-handedly held off 250 attackers from taking an army base 46 years ago.
Labalaba, renowned as one of the SAS's greatest heroes, gave his life in an epic struggle to defend his fellow soldiers at the Battle of Mirbat, in what is now Yemen, in 1972.
Labalaba and eight fellow SAS soldiers were stationed at a British Army training team house just outside the port of Mirbat in Oman.
For a year the crack unit had been on a secret assignment, codenamed Operation Jaguar, to protect the Sultan of Oman from an insurgent force, the People's Front for the Liberation of the Occupied Arab Gulf.
On the morning of July 19, 1972, 250 of the Front's best fighters stormed the port in a surprise attack that left the nine SAS men pinned down inside their fort.
Labalaba, 30, knew that without heavier fire power, the unit faced almost certain annihilation. In a daring break, he sprinted across an exposed 800 yard stretch to reach a 25-pound field gun.
The gun usually required three men to operate it, and by the time he reached it Labalaba was soaked in blood from a bullet wound to his jaw.
But the elite soldier, still under heavy fire, spun the cumbersome weapon to face the advancing guerrilla fighters and opened up from close range, decimating them.
Ignoring his wounds he continued to hold off the 250 Front fighters for six hours.
Captain Mike Kealy and comrades Tommy Tobin and Sekonaia Takavesi also ran the 800 yard gauntlet to try to save the courageous sergeant's life.
They arrived too late, but Labalaba had held off the guerrilla force long enough for the Sultan's Strikemaster jets to arrive.
The jets drove back the attackers while reinforcements from nearby Salalah were organized.
In SAS: Operation Storm, a book recounting the battle, fellow trooper Roger Cole wrote that the fight would surely have been lost had Labalaba not taken the 25-pounder.
The sergeant was posthumously awarded a Mention in Dispatches for his bravery, and his body was returned to England, where it was buried at St Martin's Church in Hereford.
A statue to the war hero was erected at the SAS headquarters outside the town in 2009.
Labalaba is an enduring legend among Fijians, 1,250 of whom are currently serving in the British Army.
After the ceremony the couple boarded their Qantas charter fight for the South Pacific nation of Tonga, the third country they are visiting during their 16-day trip on behalf of the Queen.
There they will receive an official welcome to the country from Her Royal Highness The Princess Angelika Latufuipeka at the airport.
Later they will be the guests of honour at another welcome reception and dinner in Nuku’alofa with the Tongan ruler, King Tupou VI and his wife, Queen Nanasipau’u, with traditional Tongan entertainment.