You're making a leap. Look at causal relationship error fallacy. You can't reason something out in this manner.
try reading some history:
Labor, farms, mines, factories, trading houses, investment firms, communications — even cultural and educational institutions — were enlisted into the war effort. The nation accumulated big money and generated huge new industries to mass produce planes, ships, armored vehicles and numerous other items. Major population shifts occurred as people headed to new jobs.
The draft helped bring the armed forces of the United States to more than 15 million members. Approximately 65 million men and women were in uniform or worked in war-related jobs by the end of 1943.
Massive unemployment became a thing of the past and the Great Depression was swallowed up in the worldwide effort to defeat the Axis powers of Japan, Germany and Italy.
The Great Depression
And you might avoid conservative revisionist history.