So there are actually some German wartime jokes that are actually quite funny. Here's some that I heard:

• " Where I live there's now a lot of warehouses, there were houses and there were houses, and there were houses!"
• "How can you tell an optimist from a pessimist? The optimist is learning English and the pessimist is learning Russian."
• One day at the barracks there was a soldier on his knees looking around the ground, picking up random papers he found and going "no, no that's not it". His officer asked what he was doing, "I'm looking for my special paper". He sent him to the doctor and he was declared insane, when the doctor gave him his discharge papers he explained "ah, there's my special paper!"