Short answers, pulled from the story.
The Battle of Mount Song was a 1944 engagement in southwest China during the Second World War. Chinese Nationalist forces fought for three months to dislodge a Japanese garrison that had fortified the mountain to block the Burma Road.
Mount Song sat immediately behind the Salween River and directly controlled the Burma Road, the land route used to supply China. As long as the Japanese garrison held the mountain, Chinese forces could not use the road to receive overland aid.
Over a two-year period, Japanese engineers dug a network of tunnels and bunkers and installed hidden pillboxes designed to ambush attacking troops. The underground construction made the mountain nearly impervious to Chinese artillery strikes and American bombing runs.
Chinese forces placed several tons of American TNT in tunnels dug beneath the Japanese fortifications and detonated them. Extended bombardment and significant US aid and training supported the final assault after three months of fighting.
Japanese records list Captain Kinoshita, an artillery officer, as the sole named survivor. He was ordered out the night before the outpost fell to carry news to Japanese high command. Chinese sources state that seven soldiers were captured from the total garrison, though Japanese sources do not mention prisoners.
The Chinese government built a memorial park on top of the mountain. It covers 190,000 square feet and contains 402 sculptures representing soldiers from the Chinese Expeditionary Force who fought in the battle.