Yeah I know – it is not Monday.
I first heard this when I watched the 1965 movie Battle of the Bulge.
Panzerlied was composed in 1933. In 2017, the German Army was banned from publishing song books containing Panzerlied and other marching songs by the Minsiter of Defence, Ursula von der Leyen. An attempt at denazification apparently but they are happy to name their tanks after big cats, just like the Wermacht in WW2.