Sargon the Great had the same problem. So did Genghis Khan. Once you've build this huge army that your economy cannot support, the only thing you can do is set it off in search of plunder to sustain it.
Peronist Argentina could be kept going on wartime commodity export profits. For a while. But then to keep the party of guaranteed profits and guaranteed raises going they had to print money. The presence of the US meant that Peronist Argentina couldn't invade Brazil.
With the destruction of the Jews, how many law practices, professorships, medical practices, business markets, etc did that open up ?
"Once you've build this huge army that your economy cannot support, the only thing you can do is set it off in search of plunder to sustain it."
We better keep a close eye on China!