The war embraced infinitely complex elements and motives. The most important single one of those elements was the struggle for power in Europe, and t… - Correlli Barnett

There are of course the neo-Puginites or neo-Morrisites who like to think of Britain as leading the world into a post-industrial phase where this form of capability will be obsolete, and who despise so material a matter as GNP as unethical or—the trendy version—unecological. Yet these high-minded escapists are among the first to howl about the need for more resources to be invested in hospitals, schools, good works, prison improvement, subsidies for the arts and what not. A country of static or declining GNP will not be an 'Erewhon' but a pinched and increasingly bitter place. Poverty may be noble as a concept; it is rarely so in in the flesh.

As I can remember, as a schoolboy in south London, there was no dismay among my family and their friends at the sight of contorted vapour trails high over us as Fighter Command and the Luftwaffe fought it out in the blue summer sky – only a sense of excitement. Looking back now as a historian, it is clear to me that in 1940 the British nation was blessed by an inner certainty that, just as the Navy had seen off Philip II of Spain in 1588 and Napoleon in 1805, so now the Royal Air Force and the Navy together would see off that funny little man with the toothbrush moustache and his fat chum in the gawdy uniform covered in medals. In that certainty, there was truly an element of the heroic.

For other great powers did not see the world as one great human society, but – just as the British had done up to the nineteenth century – as an arena where, subject to the mutual convenience of diplomatic custom, nation-states – the highest effective form of human society – competed for advantage. They did not believe in a natural harmony among mankind, but in national interests that might sometimes coincide with the interests of others, sometimes conflict. It followed that they considered that relations between states were governed not by law, nor even by moral principle, but by power and ambition restrained only by prudent calculation and a sense of moderation. War therefore, in their view was not a lamentable breakdown of a natural harmony called peace, but an episode of violence in a perpetual struggle. European powers looked on armed forces not as wicked, but as among the instruments of diplomacy. Indeed, whereas in Britain romantic emotion expressed itself in visions of a world society, in Europe it had given rise to a fervent nationalism. In the late nineteenth century the world was becoming not less dangerous and anarchical, but more so. Moralising internationalism, born out of liberalism by evangelical faith, was therefore an unsuitable guide to British policy.