It happens every time whenever there is a major war
Every nation had been doing essentially the same throughout history in such circumstances. During the American Civil war the Union had been printing the greenbacks just like their opponents, the Confederates, printed the graybacks like there was no tomorrow (and there really hadn't been tomorrow for the latter). In these cases hyperinflation is a postponed effect which may never come at all. If you lose a war your money is gone anyway, if you win you just plunder the other side, thus squashing inflation with the loot and boot. The "worst" case is when there is no winner as well as no loser, and then governments must squeeze the monetary base if they don't want runaway inflation to overrun them
Banks or foreign countries finance many wars @ interest. Banks funded both sides of the american civil war.
After World War I and II many countries financed loans from foreign powers.
Nations normally don't print their way out of debt anymore than greece printed its way out of debt the last few times their deficit threatened the EU. Its much more common for greece and other countries in debt to be bailed out.
German's needing a wheelbarrow full of currency to buy a single loaf of bread isn't a success, I don't think.