Updated February 6, 2019.
This website, Today in WW2 History: https://ww2db.com/event/today/ is a good way to see what’s happened in history related to World War II. It will change from day to day. You can choose https://ww2db.com/event/timeline/ to see different years and it has a custom search if you are looking for something specific. I will be doing a blog post tomorrow about Glenn Miller’s plane that disappeared December 15, 1944 on a trip from England to France. It is believed to have been lost in the English Channel. I came across the article when looking at this site.
The site has a Patreon site: https://www.patreon.com/ww2db.