This is just a snippet from a battle I had a couple of weeks ago but its a classic example of
true LOS blocking terrain..
So neways, My army was Eldar & my friend played a force O' tyranids and we start the game.. the second or third turn in, on his go.. hes looking all gleeful/happy with himself and I wonder why this is and indeed ask him so to which he replies that he reckons hes gonna assault one of my squads with a squad of hormagaunts.
I reply to this, What squad of hormagaunts..? He points at somthing behind a tower, which I look behind and find theres a neat coloum of the beasties that exactly mirror the towers
LOS shadow (From my point of view) which he claims were positioned to get the from the surrounding cover.
Ohh how half my army fell to a horde of cheecky hormagaunts.
Lesson of the day; Dont be as lazy as me and move a little to get a good scope of the entire battlefield lest you fall foul of hidey hormagaunts!