Imagine mechanized war just does not work.
Engines fail often and lack spare parts, tyres get bogged down in mud, oil is difficult to be brought to the frontline, specialist mechanics are difficult to train, armoured division are a LOT more costly than infantry ones (and often a molotov cocktail is sufficient to eliminate a tank/panzer), limited arc of vision from inside a tank make them too vulnerable, tank crews often suffer from carbon monoxide intoxycation, fuel is an inflammable substance, etc.
All in all, the idea of mechanized war is a total nonsense.
What are the consequences?