You wouldn’t know it, based on the endless cries for more money coming from the military, politicians, and the president, but these are the best of times for the Pentagon. Spending on the Department of Defense alone is already well in excess of half a trillion dollars a year and counting. Adjusted for inflation, that means it’s higher than at the height of President Ronald Reagan’s massive buildup of the 1980s and is now nearing the post-World War II funding peak.