My Dad served in the Philippines and then did Occupation Duty in Japan. Part of The Greatest Generation that saved Civilization, but at great cost!
This is Nationalist Chinese, not Japanese, but wartime issue 1942. I like the soldier on the reverse. My dad fought in a US Army signal unit monitoring Chinese and Japanese radio traffic around Kunming and south China, as the Chinese forces pushed the Japanese east and out of China. I have a few other various dirty old notes of the Central Bank and some farmers banks. Not worth anything that I know of, but very interesting and artistic.
My father was in the US Army in the Philippines prior to WWII. He was helping to set up telephone systems there for the Army. By the time WWII started he was back in the US and had gotten his commission. He was doing telephone systems in the NYC area. Shortly after that war he was in Germany doing Army "stuff". He hung around and ended up in Korea right after that war doing more Army "stuff". After that tour he retired as a major (22 years).