Ah, that was my second guess. I've only seen snippets, but it looks like an amazing movie. Specially since I like gritty war shows.
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Saving Private Ryan.
Must-See, if you haven't already. Specially if you're a fan of Band of Brothers.

It's the opening scene of the move, during D-Day. The film itself was so realistically brutal that veterans had to leave the cinema during the scene, as they simply could not watch it, was too realistic.

A brutal, realistic depiction of coastal warfare. What was this from, ahain? Reminds me a lot of Band of Brothers.