Interesting - I found this quantitative historical study [0] showing that while a civil war does significantly increase the likelihood of inflation, only 36% of countries analyzed which had a civil war between 1975-1999 ended up in an inflationary crisis. And with the USD having such a strong foundation, I would expect the risk to be significantly lower.

[0] https://kjis.org/journal/view.html?uid=302&vmd=Full

Exchange it for something else before the war started?