Because the United States does not look like a militarized country, it's hard for Americans to grasp that Washington is a war capital, that the United States is a war state, that it garrisons much of the planet, and that the norm for us is to be at war somewhere at any moment. Similarly, we've become used to the idea that, when various forms of force (or threats of force) don't work, our response, as in Afghanistan, is to recalibrate and apply some alternate version of the same under a new or rebranded name -- the hot one now being "counterinsurgency" or COIN -- in a marginally different manner. When it comes to war, as well as preparations for war, more is now generally the order of the day.
This wasn't always the case. The early Republic that the most hawkish conservatives love to cite was a land whose leaders looked with suspicion on the very idea of a standing army. They would have viewed our hundreds of global garrisons, our vast network of spies, agents, Special Forces teams, surveillance operatives, interrogators, rent-a-guns, and mercenary corporations, as well as our staggering Pentagon budget and the constant future-war gaming and planning that accompanies it, with genuine horror.