> I wonder what it is relative to the Cold War.

According to this chart[0], US military spending as a percentage of GDP is pretty close to an all-time low. Sadly doesn't seem to include data covering WWII or Korea, though.

I imagine the notable peaks might be related to:

* '62 Cuban missile crisis (cold war)

* '67 Vietnam (cold war)

* '82, '86 "New Cold War"[1]

* '05, '11 Post-9/11 wars

But mostly downward after '91.

Sadly this chart (Military expenditure (% of general government expenditure)) seems to be empty, but I'm sure there's data on it somewhere.

[0]: https://data.worldbank.org/indicator/MS.MIL.XPND.GD.ZS?locat... [1]: https://en.wikipedia.org/wiki/Cold_War#US_and_USSR_military_... [2]: https://data.worldbank.org/indicator/MS.MIL.XPND.ZS?location...