Landships II

Here's one pic with commentary:

http://cas.awm.gov.au/item/H08752.

Not that it is an example but a properly constructed wire entanglement (anchored interlocked cells of Dannert (concertina) wire, several coils high) can stop a tank and is fairly blast resistant. Never saw it put to test but that's what they told us when they had us build the bl**** things. Now is that a test for your signature?