The Germans during the Second World War noted that the Americans were far quicker to learn battlefield lessons than their British counter-parts. The same may still be true. But while the Americans' learning curve may be far steeper than the British one, the Americans tend to pay a very high price for it. The problem is what is known as American Exceptionalism. American kids are taught from an early age that they live in the greatest country in the world. No other country comes close. That's why the rest of the world is so keen to live there. And that's why Americans have nothing to learn from anyone else. Therefore it is pointless anyone else trying to share the benefit of their experience with the Americans. The First World War is a classic example of this. Both the British and French tried to prepare their newly arrived allies from across the Atlantic the realities of war on the Western Front. But the Americans had their own ideas. They were wrong and the Americans suffered casualties out of all proportion to what they managed to achieve. The Americans, sadly, insist on learning from their own experience. A more recent but thankfully less costly example of this trait was at a shipboard fire fighting course one of my friends took part in. The American participants ignored what their British instructors told them, they knew better. The result was that a couple of them were almost killed during what should have been a simple routine lesson and their instructors had to risk death or serious injury to rescue them from their own stupidity.