The Eastern Front is so unknown that countless thousands of books have been written about it.
I would love to educate Balu on the real "unknown war" -- the German side. Since Soviet Russia has censored or revised all accounts of Russian atrocities since 1941.
I have read books and seen films about the "unknown war." My maternal grandfather fought on the Eastern Front in 1944-45. I am guessing that Balu has relatives who fought on the opposite side.
The REAL "unknown war" is how the Russians oppressed their territories after WWII. The Berlin Wall was not erected as a tourist attraction.