War: How Conflict Shaped Us, by Margaret MacMillan, is an interesting book outlining how war has shaped modern human systems, including its politics, economies, social relations, and so forth. Many of the ideals, systems and politics we face everyday have been the result of warfare. In Canada, where I live, our income tax, working week, political structures and systems, and so forth, have all been heavily shaped by our experiences mobilizing for the World Wars of the 20th century. This is common is most societies across the world, whether it be older conflicts (like our 20th century wars, almost 100 years old at this point) or newer conflicts or cold conflicts (think Chinese preparedness RE: Taiwan, or Iran developing nuclear weapons, etc.). Our societies today are the product of a long history of mobilization for warfare, followed by a slow implementation of greater rights for a nations citizens or subjects, and a continuation from there. Welfare, voting rights and the like have all been implemented largely as a way to placate soldiers returning from war - those who have given much of themselves, up to and including there lives, for their state.
This was a fascinating book that examines a large amount of what war has meant in society. It is largely a refutation of Steven Pinker's the Better Angels theory, where human society is getting more peaceful. By the numbers, more people died in the 20th century from warfare then in any other century, and long periods of peace, such as the Concert of Europe era, have existed in human societies in the past. Human's have developed better systems of morals and ethics, to be sure. We abhor violence, warfare is no longer entirely acceptable as a form of international diplomacy, and so forth. While these statements are in no way universal, the 21st Century is looking bright so far, but even still, warfare exists. Iraq and Afghanistan were both terrible wars at the beginning of this century that have killed untold thousands. Violence continues daily in Yemen, Somalia, the Democratic Republic of the Congo, and Syria. Cold conflicts, like the Korean War, the Ukraine-Russian War, and civil conflicts in Sudan, South Sudan, Libya and between India-Pakistan, or India-China, China-Taiwan or the like, could become hot at any point. And with the prevalence of modern weaponry, nuclear arms and weapons of mass destruction in most states, warfare will have a horrid cost on the civilian population. I agree with MacMillan here - the 21st century is not over, and human violence, although better understood, is still present within all of our systems and societies.
This was a fascinating read, concise, quick and interesting. It is a broad strokes overview, providing information that may be well known to most students of history or politics. Even so, it is an excellent read to brush up on the topic, and an interesting, if rather straightforward, theory about wars influence on human systems and societies. Definitely worth a read.