This 'children's' story is hilarious. 'Written' by both Beatrix Potter and Sven Hassell (now there's a writing team made in heaven) it comes with a hat tip to Sir Humph, who points out quite accurately that the tank has been misattributed. Fancy that. I fancy that the 'Panzerfaust' also looks more like a bazooka ... but only a pedant would point that out. It's not the only thing about it that's decidely odd.
Print it out and read it to your kids tonight. They'll thank you for it later.