Mukherjee, the supreme commander of Indian armed forces, walked up to a pillar erected in memory of the troops and placed a wreath there.
This was the second engagement of the Mukherjee, who arrived here yesterday on the first ever state visit from India to this largest island in the Pacific.
Immediately after meeting the Governor General of Papua New Guinea (PNG) Sir Michael Ogio, President drove to the war cemetery, located 20-km from here.
The cemetery contains 3,824 Commonwealth burials of the second World War out of which 699 of them unidentified. Around 250 of the unidentified soldiers are from undivided India who were fighting along with the British and allied forces.
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Indian High Commissioner to PNG Nagendra Kumar Saxena, who took over the office in October last year, has been extensively working on the role of Indians during the World War and other areas of the PNG.
"Their mortal remains lie buried in war cemeteries throughout the country," he said.
They decided to attack by sea and assembled an amphibious expedition for the purpose, which set out early in May, but were intercepted and heavily defeated by American air and naval forces in the Coral Sea and what remained of the Japanese expedition returned to Rabaul.
Those who died in the fighting in Papua and Bougainville are buried in Port Moresby Bomana War Cemetery and their graves brought in by the Australian Army Graves Service from burial grounds in the areas where the fighting had taken place.
The unidentified soldiers of the United Kingdom forces were all from the Royal Artillery, captured by the Japanese at the fall of Singapore. They died in captivity and were buried on the island of Bailale in the Solomons. These men were later re-buried in a temporary war cemetery at Torokina on Bougainville Island before being transferred to their permanent resting place at Port Moresby.