I don't like 'Death Traps' as a basis for armour effectiveness discussions as, good read though it is, it does come from a very narrow perspective.

Buckley's observation that German guns of the period (at Normandy ranges) could slice through any armour protection that was technologically possible in 1944 is an interesting one.
Kind of pulls the rug out from any discussion of armour thickness deficiencies on the allied side and refocuses firepower as the more significant technological factor in Normandy. Though even that's far more complex than it first appears.

Turning out to be one of the most sensible books on the campaign I've read. Complexity heaped on complexity but all good stuff, as the situation was, as is everything in war, considerably more complex than first appears.

Cheers,
Adam.

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"Wars cannot be fought with dream stuff" - Sir Percy Hobart.