Or, Das Boot, but in a tank, instead of a submarine.
At about half the length of that German WW2 based classic, Samuel Maoz's directorial debut is sharp, succinct and hard, pulling no punches. Viewing the outside world from their sardine can, in immense heat, is done through the jerky, sudden-zoom hopping periscopic sight.
Set in 1982 during the first Israeli/Lebanon war, Maoz draws on his actual own experience fighting in this conflict. The four Israeli conscripts in the tank go through just about every human experience and emotion - and this only follows 24 hours! The tank is unreliable and breaks down in very dangerous places and often will not start. A prisoner is left with them - making their cramped conditions even more so. Toward the end, a night battle rages, so you have green-screen night vision, plus the subtitles throughout, so if you're not shaken to bits emotionally, then your eyes will be.
Many will find it too much to bear, or be comfortable with. Others will bask in its gritty and gruesome oil, sweat and realism. It's fictional (as far as I know) and doesn't try to make broad statements but outlines the men's personal lives and how they react and cope - or not - with their - and others' actions, some of which are just too tragic to contemplate.
Overall, it's certainly an unusual approach that works, but only if it works for you. If it does, then it's a fine and hard-hitting war drama, if it doesn't, then you won't waste a second to press 'stop'.