For me it goes to Sharpe's Battle. Towards the very end as Harper and the rest of the Chosen Men begin to repulse the assault of Brigadier Loup's attack, Rifleman Ben Perkins, youngest of the lot of them, crosses a courtyard to assist his Irish allies, only for the turncoat O'Rourke to stab him in the chest with his bayonet and leave the boy for dead. What follows is the rest of the Chosen Men pull Perkins away from the battle and hold him close, with tears in their eyes, as Ben asks Daniel Hagman to give him one final tune, and he obliges with a heartfelt rendition of 'O'er the Hills and Far Away', and the scene ends with Patrick Harper swearing cold bloody revenge upon Private O'Rourke...... which he does, but man, watching one of the Chosen Men get offed by someone on his own side made even me shed a tear.