The doorways had a transverse mat well with a 1½in thick floor mat. In service it was discovered that the matting absorbed moisture which eventually resulted in corrosion of the steel.

Mech & Elec Design Engineers, Berkshire - to £32000 plus bens

That issue was mostly solved in the modern forces, but it was still a hot button for every student of modern military history.

Well, if you're going to do untabification, I guess it's best to keep it separate, but ... I think in general it's a very bad idea to make widespread source changes for purely cosmetic reasons […]