Portal:Germany/Anniversaries/April/April 22
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![Immanuel Kant](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Immanuel_Kant_portrait_c1790.jpg/100px-Immanuel_Kant_portrait_c1790.jpg)
- 1401 - Capture of Klaus Störtebeker
- 1724 - Birth of philosopher Immanuel Kant
- 1915 - Germany becomes the first nation to use chemical weapons in the Second Battle of Ypres
- 1945 - Death of artist Käthe Kollwitz
- 1980 - Death of physicist Fritz Strassmann, one of the discoverers of nuclear fission