The rear part is (for me) impossible to decipher, due to the images quality. It´s something like this:
"[...] auch so meckern,
[...] werden sie nicht erklettern."
I guess you could translate the fragments loosely like this: "[However?] they bleat, they can not conquest [illegible]."
The side I can translate though:
"Panzer bauen, auf den Führer vertrauen, die Feinde verhauen, so sind die Söhne aus Ostmarks Gauen!"
Translation: "Building tanks, trusting the Führer (Hitler), beating up the enemies, that´s how the Ostmark (Eastern Prussias) sons are!"
The front plate says: "Für Deutschlands Sieg und Ehre!", which means "For Germanies victory and honor!"
