To the casual observer, 95-year-old Lee Hak-rae could be just another elderly person in Japan. Surrounded by pictures of his family and paintings by his great-grandchildren, Lee potters about his cluttered living room on the outskirts of Tokyo.

But Lee is obsessed by brutal events of 75 years ago that have defined his life: his recruitment into the Japanese army from then-occupied Korea in 1942; his role in building the Thai-Burma railway; being designated a World War II criminal; and how, he says, he was tossed into the dustbin of history by both Japan and South Korea.

Since recovering its sovereignty under the San Francisco Peace Treaty signed in 1951, and reviving military pensions in 1953, Japan has given a pension supplement that can add up to about ¥4.35 million a year to military veterans.