Hiroo Onoda waged a guerilla campaign in Lubang Island near Luzon until he was finally persuaded in 1974 that peace had broken out.
Leaflet drops and other efforts to convince him the Imperial Army had been defeated were unsuccessful, and it was only a visit from his former commanding officer, who ordered him to lay down his arms, that brought an end to his one-man war.
Their number included a soldier arrested in the jungles of Guam in 1972.
Trained as an information officer and guerrilla tactics coach, Onoda was dispatched to Lubang in 1944 and ordered never to surrender, never to resort to suicidal attacks and to hold firm until reinforcements arrived.
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He and three other soldiers continued to obey that order long after Japan's 1945 defeat.
Their existence became widely known in 1950, when one of their number emerged and returned to Japan.
Tokyo and Manila searched for the remaining two over the next decade, but ruled in 1959 that they were already dead.
However, in 1972, Onoda and the other surviving soldier got involved in a shoot-out with Philippine troops. His comrade died, but Onoda managed to escape.
The incident shocked Japan, which took his family members to Lubang in the hope of persuading him that hostilities were over.
Onoda later explained that he had believed attempts to coax him out were the work of a puppet regime installed in Tokyo by the United States.
The regular overflight by US planes during the long years of the Vietnam war also convinced him that the battle he had joined was still being played out across Asia.
It was not until 1974, when his old commanding officer visited him in his jungle hideout to rescind the original order, that Onoda's war eventually ended.