Unlike the Royal Navy, the British Army proved itself over the course of decades incapable of taking new ideas on board: trench warfare, the machine gun and the tank to name a few. And at the heart of the problem was that too many men in the army refused to take orders. Not the rank and file, you understand, who were executed for any refusal to march into a hail of bullets. But the officers. The reason was that they regarded themselves as gentlemen – and gentlemen could not be bossed around.