|WWI Australian infantryman--a favorite photo!|
The Commonwealth War Graves Commission maintains the Debt of Honour Register, with 1.7 million names of Commonwealth soldiers killed during WWI and WWII. The Register includes some civilian casualties from the Second World War as well.
The scope of the database is as vast as the British Empire itself. Most of the names are from major Commonwealth countries -- UK, Canada, Australia, New Zealand, South Africa, and India.
But the actual burial sites of the dead can be found pretty much worldwide: 15,000 names in Israel and Palestine, 52,000 in Egypt, 7,000 in Libya, 38,000 in Burma (Myanmar), 29,000 in Singapore, 55,000 in Tanzania, 37,000 in Turkey, 6,000 in China, 62,000 in India.
If you have family history with any English, UK or Commonwealth roots, this easy-to-use site is certainly a database to explore.
Don't forget to also check for your family history at NewspaperArchive and Newspapers.com. These are subscription databases, but they are among the most powerful research tools available for looking into family roots. And visit the main page of Free Genealogy Tools for more, umm, free genealogical tools.