Sure wish I knew what the words meant, but those pictures were hilarious enough on their own. ?
A go at some more of the comments to the pictures (ver loosely translated, since the text is made to rhyme, so it's written quite strange):
5: Missing often is poison to the self-confidence
7: If a fortress (B17) starts smoking then don't think of having won the palm, keep on shooting! - some regretted being happy too early
13: Theory is dull - Emil, train the aiming!
16: Cursing only heats up the head. When you are close to the enemy - be as cold as ice.
17: If you enter the dirt of the propeller your plane easily is pushed aside. Flee the smell! - and rather fly a bit above or below it.
27: Girl's love often is very treacherous - and the trajectory of tracers most of the time even more.
29: Resi is easy to defeat - but don't bend the Revi (Reflexvisier, the sight in the plane)
31: From time to time one hits quite well, but still the question is if there is any effect. In this case you - my son - surely took the wrong ammunition.
32 lower right, after giving general info on different ammo types: In L Dv 4000/10 you can see even more about this. The L Dv - thank god - lies in the safe of some stranger that can surely can't make use of it
33: The mine ammunition does to a tank as much as a flea to a Landser (German Infantry)
35: No one besides a hunter feels battle and victory so concentrated, that makes us happy, proud and glad - A horrido (a traditional hunter's salute) to hunting!