"Was there any provision from the FCC for military radio operators who
knew code well to get an amateur license more easily and quickly? There
was and is a streamlined process for military pilots to get pilot's
licenses."
The only one that had some reciprocity was the 2nd Class Commercial Telegraph Operator and Amatuer Extra which both had a 20WPM test, but code credit was all that was accepted, the tech part, while similar, was not the same, mainly due to totally different regulations. Probably a lot of modern hams have no clue what the older tests were like, but picking up any of the 1950/60 License Manuals, by the ARRL, Ameco, Allied would be an eye opener for most today, especially those who buy commercially made dipoles and coax with the connectors installed.
Charlie, W4MEC