The Retired Investor: Inflation and Wartime Economies

"In the meantime, our great military is Loading Up and Resting, looking forward, actually, to its next Conquest. AMERICA IS BACK."  — President Donald Trump, posted on Truth Social, April 8, 2026

 

America, as the president posted, is back. But the critical question is: Back to what? For the first time since Vietnam, we are entering a wartime economy — a shift with vast consequences, the most significant of which is inflation.

 

As the president prepares the armed services for his next conquest, estimates are that the Iran War costs the U.S. about $1 billion per day. This amount does not include other economic costs, such as higher energy prices and fertilizer costs.

 

The serious consequence of a wartime economy will be rising inflation. History is clear: war is always inflationary. Enormous fiscal spending and monetary expansion guarantee price spikes, worsening when the economy is already expanding. This, combined with our $38 trillion national debt, magnifies the economic challenge ahead.

 

My experience of a wartime economy during the Vietnam era ended in crazy inflation. President Lyndon Johnson refused to raise taxes to fund the war. He also spent billions to expand his Great Society program. This "guns and butter" strategy led to double-digit inflation and years of stagflation.

 

Aside from inflation, if history is any guide, unemployment would fall, especially if the U.S. instituted a draft next year, which looks increasingly likely. Employment might rise across the labor force if there are enough recruits to fill the military's quotas and if there are enough workers to replace them.

 

The administration has already raised the maximum recruitment age to 42 from 35. There is also a plan to make registering with the Selective Service mandatory for all Americans of draftable age by the end of this year. Manpower may still be a problem unless Trump relaxes his immigration policies to find new recruits for the military and the labor force.

 

And who will fight these wars? Look no further than the younger generations. The sad fact is that the young have always provided the cannon fodder for nations at war. Incentives are growing. It was no accident that service members received a $1,777 after-tax present from the president last Christmas. He also wants to increase wages for those in the lower echelons of the military.

 

As for other areas of the economy, labor might see an uptick among defense contractors, arms manufacturers, cybersecurity firms, and energy exporters, but AI would likely significantly reduce the workforce required. The administration has already asked several manufacturers to increase their roles in military production. General Motors, Ford, GE Aerospace, and Oshkosh are just some of the companies asked to divert more of their output to the wartime economy.

 

I date the Russian invasion of Ukraine during the Biden administration as our entry into a war economy. Until now, the great powers — the U.S. and China — have used proxy wars rather than face-to-face conflict. Ukraine, our proxy, has received trillions of dollars in U.S. aid. Russia (China's proxy) now spends over 7 percent of its GDP fighting them. Since then, American war spending has spread worldwide. This now includes money for Lebanon, Gaza, Syria, Israel, Venezuela, Iran, Ukraine, and soon Cuba. That is only a partial list.

 

Europe is also entering a wartime economy. NATO members have pledged to spend 5 percent of GDP on arms and security. As in the U.S., this requires deep cuts to social welfare and health care. It also crowds out private investment.

 

Over the last year, a strategic plan has also been forming within the EU for a new European-only NATO ( excluding the U.S.). Germany and France, among others, are already preparing their own military conscription programs. Germany, for example, is switching from cars to cannons and reinventing itself as a weapons manufacturer.

 

In this wartime economy in the U.S., American taxpayers and consumers will likely bear the greatest burden. Purchasing power, already reduced by higher prices — especially for fuel — is slowly declining. Expect more of the same. As for investments, protection will come from owning assets that benefit from wartime and inflation.