"A jackboot is a military boot such as the cavalry jackboot or the hobnailed jackboot. The hobnailed jackboot has a different design and function from the ...
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first type. It is a combat boot that is designed for marching. It rises to mid-calf or higher with no laces and usually has a leather sole with hobnails. Jackboots have been associated with totalitarianism, as they were worn by German military and paramilitary forces during the Second World War." - (en.wikipedia.org 20.09.2021)