Landships II

I've seen Uomini Contro and as I far as I can tell that armor has no historical basis.  I suspect it was inspired by images of the Brewster armor that you mentioned.  In the movie they call it "Fassini"(?) armor, but I can find no evidence that such armor ever existed.  The Italians did use Farina armor, but it didn't look like that, and it was worn by special companies of engineers tasked to cut through barbed wire (called the "companies of death").  These units were disbanded in 1916 because of high casaulties.  I do not know how much it was used afterwards, but perhaps it was still used in special circumstances.

As a recent episode of "The Reinventors" demonstrated, it is effectively impossible to aim a rifle with vision restricted to a helmet eyeslit. They were recreating and testing Ned Kelly's armour - Kelly armour link (State Library of Victoria). And while it would stop anything up to and including a Martini-Henry 577/450 round at close range, the noise and impact trauma were very considerable. Not quite as bad as being dead, perhaps, but really only practical for a single, brief engagement armed with pistols, shotguns or sub-machine guns.

Stranger things have happened but it is hard to imagine any valid purpose for that type of armour on any battlefield. Although the opposition might be briefly disabled with laughter.