"Enemy at the Gates."
The true story of a duel during World War II between celebrated Russian sniper, Vassili Zaitsev, and the Nazi's best sharpshooter, Major Konig, set against the epic battle of Stalingrad.
Then there is, "The Ghost in the Darkness." Based on the Lions of Tsavo..
The film is based on a true story and during the construction of the bridge, the lions would enter the workers camp to kill. Believing them not to be real lions, the locals name them 'The Ghost' and 'The Darkness'. After losing dozens of workers to the lions, the railroad company brought in Remington, an American 'great white hunter', to kill them, but even his reputation for being the best could not prevent yet more carnage. It is believed that over 130 people were killed by the two lions in just a few months.
Both pretty intense flims. However, my favorite too is "Quigley Down Under!!"
Rod