And the Japanese.
Awful lot of innocent blood on American hands, though it's similar anywhere.
It's even more insidious when you realize Japan didn't turn from an agrarian nation to a military / industrial superpower by themselves either...it took them 30 years to go from the "horse and carriage"-level to super-battleships and aircraft carriers. Most of this was fueled by US and UK technology and trade. The entire Japanese war machine right up to 1940 was built on Texas oil. It was only after the US oil imbargo that they had problems finding enough oil, and that caused them to invade south, through UK territory trying to secure oil supplies in indonesia. Basically they had a war machine entirely dependent on the USA, and when that support was taken away they needed to start the war - it was the last attempt at shoring up their government basically, as the entire military would have collapsed within 6 months without US oil.
One way to look at it (and holds true in many wars) is that the wealthy class made a lot of money by fueling these dictators aggressive ambitions in the first place, then when the shit hits the fan and that dictator is seen as out of control, it's the working class called upon to lay down their lives to stop the dictator, while the war profiteers double their money by backing the new war. You see this same pattern with Nazi Germany, Japan, Iraq and others.