Korea's location on China's eastern border played a key role in its development. Korea adapted many cultural and technological influences from China, while Korea served as a cultural bridge between China and Japan. The Chinese sent Buddhist missionaries, and then the new Korean and Japanese monks went to China to learn more about buddhism.
They should interview other people who fought in that same war ( which would be back up witness for these two different accounts). So whoever has the most back up witnesses must be telling the truth ( also make sure the other people you interview don't know they are back up witness).
It was his only complete book, and the work became the bible of National Socialism (Nazism) in Germany’s Third Reich. It was published in two volumes in 1925 and 1927, and an abridged edition appeared in 1930. By 1939 it had sold 5,200,000 copies and had been translated into 11 languages.