"Julius Jakob Freiherr von Haynau (14 October 1786 – 14 March 1853) was an Austrian general who suppressed insurrectionary movements in Italy and Hungary in 1848 ...
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and later. While a hugely effective military leader, he also gained renown as an aggressive and ruthless commander. His soldiers called him the "Habsburg Tiger"; those opponents who suffered from his brutality called him the "Hyena of Brescia" and the "Hangman of Arad"." - (en.wikipedia.org 23.12.2021)