This has brought to mind a question that has always intrigued me, but I've never asked... 'Why is the fold down rear tread-plate / cargo-rack on Mk. V. tanks [whichever it is] such a wavy shape?'
__________________
"You there on the port!". "S'gin actually, but thanks for noticing [hic]".
Fancy going to all that trouble then putting it where you can't see it.
__________________
"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.