mmmmmmmmm........you had me at panzers
"Getman" is a mistype for "German" ("r" next to "t"), hence the term "panzer" as applied to the WWII German tank.
When Allied troops occupied Germany subsequent to the war, they were housed in military garrisons--Kasernen--contiguous facilities as formerly used by Germans on a unit by unit basis (originally barracks and training fields for horse cavalry ==> mechanized cavalry, which would be tanks), or newly constructed on that kind of plan by Occupation forces.
I had wondered if the Arabic term "Qasr" (meaning "a fortlet") was related to the German word, perhaps borrowed and applied by returning Crusader knights (who were medieval horse cavalry) as they established headquarters in the homelands of Germany or Austria or Prussia.
But maybe that is just a coincidental wild thought, with rfp1234 having the better etymology for "kaserne."