They still do it; it's still very important to them. They maintain their own test, the ASVAB ("Armed Services Vocational Aptitude Battery").

https://en.wikipedia.org/wiki/Armed_Services_Vocational_Apti...

For a vivid picture of why the military is so insistent on IQ tests despite overwhelming political pressure to stop using them, you might like reading https://www.amazon.com/McNamaras-Folly-Hamilton-Gregory/dp/1... .