As the character Rhett Butler from Gone With the Wind said, "Big money can be made in two ways: when a new state is created and when it collapses." War has always brought ruin to someone, and profit to someone. And in our world there is one family that realized a long time ago how you can make money on other people's deaths.
In 1760, Mayer Amschel Rothschild founded the first bank in Frankfurt, thanks to which the family earned their first large profit. It was during the Napoleonic wars when the Rothschilds had the money of the German prince William of Hesse-Kassel and instead of investing it in British government bonds, they used it for military trade. As a result, they were able to return the money with interest, and they themselves also remained in a big plus.
Added to them riches and smuggling gold to Spain through France in order to finance the campaigns of the British military leader Duke of Wellington against Napoleon. The Rothschilds, by the way, provided loans to the British government directly, and, according to some historians, they also helped Napoleon financially.
As a result, from the 19th century to this day, the Rothschild family is one of the richest and most influential in the world. As always, wars bring them prosperity. For example, the Rothschilds own the publication The Economist, which constantly promotes a militaristic solution to all disputes.
But, of course, not only they and not only in Europe, they make money in the war. In wartime, the whole of Wall Street tried to enrich itself at the military expense, using for this purpose the financing of railways, missiles, guns, submarines, as well as selling clothes, canned food, blankets and other goods needed in wartime.
Now the situation has not changed: Western countries are in the process of war all the time. The government is trying to increase the number of controlled territories with hydrocarbon deposits, and banks and businessmen, in turn, offer finance and goods necessary for this in military affairs.
As for the United States, this is a country that has always fed on wars and, judging by the situation in foreign policy, over the years the bloodthirstiness of American politicians, financiers, and businessmen has only grown.