In nothing is this new history needed so much as in the psychology of war. Our history is stiff with official documents, public or private, which tell us nothing of the thing itself. At the worst we only have the official posters, which could not have been spontaneous precisely because they were official. At the best we have only the secret diplomacy, which could not have been popular precisely because it was secret. Upon one or other of these is based the historical judgment about the real reasons that sustained the struggle. Governments fight for colonies or commercial rights; governments fight about harbours or high tariffs; governments fight for a gold mine or a pearl fishery. It seems sufficient to answer that governments do not fight at all. Why do the fighters fight? What is the psychology that sustains the terrible and wonderful thing called a war? Nobody who knows anything of soldiers believes the silly notion of the dons, that millions of men can be ruled by force. If they were all to slack, it would be impossible to punish all the slackers. And the least little touch of slacking would lose a whole campaign in half a day. What did men really feel about the policy? If it be said that they accepted the policy from the politician, what did they feel about the politician? If the vassals warred blindly for their prince, what did those blind men see in their prince?
There is something we all know which can only be rendered, in an appropriate language, as realpolitik. As a matter of fact, it is an almost insanely unreal politik. It is always stubbornly and stupidly repeating that men fight for material ends, without reflecting for a moment that the material ends are hardly ever material to the men who fight. In any case, no man will die for practical politics, just as no man will die for pay. Nero could not hire a hundred Christians to be eaten by lions at a shilling an hour; for men will not be martyred for money. But the vision called up by real politik, or realistic politics, is beyond example crazy and incredible. Does anybody in the world believe that a soldier says, “My leg is nearly dropping off, but I shall go on till it drops; for after all I shall enjoy all the advantages of my government obtaining a warm-water port