With ref: Q's statement about the French & Spanish dead at Trafalgar. Any war is an abomination, however, Britain was, as it was in 1940 against Hitler, fighting for its very existance. Napolean ruled Europe and had an army waiting to invade England. If the Franco/Spanish fleet had gained control of the seas, and swept up the Channel, the far more professional French army would have conquored.
So should we have hoisted the white flag, and let the megalamanic rule us?