The war happened between 1939 and 1945. It lasted around 2 months. Sorry, it was not during the Chinese civil war, Hornblower.
A couple of hints:
China was not involved.
Less than a year after this war, a short man died from an air attack staged from one (or both possibly, on further thought) of the 2 countries involved in this war, but the attack was not by either of those 2 countries that fought against each other in that war. Earlier, a famous - or infamous in my view - collegue of the dead man remarked, in casual conversation with him, and I paraphrase, "X, you'll be standing on a box on the bridge of your....". It turned out to be a prophesy come true.