- January 22, 1863 - The January Uprising - an uprising in the former Polish-Lithuanian Commonwealth against the Russian Empire. It began January 22, 1863, and lasted until the last insurgents were captured in 1865.
- January 17, 1945 - Warsaw was "liberated" by Soviet troops.
- January 27, 1945 - The Russian Army liberated Auschwitz death camp near Krakow in Poland.