https://www.militarytimes.com/news/pentagon-congress/2019/07/12/bid-for-a-higher-military-pay-raise-fizzles-amid-partisan-fighting-in-congress/

“President Donald Trump has repeatedly cited the 3.1 percent increase as evidence of his administration’s commitment to taking care of servicemembers. The 3.1 percent figure matches the long-established federal formula for keeping military pay in line with the gradual increase in private sector wages.“