https://www.whitehouse.gov/presidential-actions/2018-amendments-manual-courts-martial-united-states/

>the MJA shall take effect on January 1, 2019

>the MJA shall not apply in any case in which charges are referred to trial by court-martial before January 1, 2019

https://www.army.mil/article/205545/changes_to_ucmj_military_justice_act_of_2016_brings_about_training

The UCMJ is a federal law, enacted by Congress that defines the armed forces justice system. The UCMJ is comprised of 134 articles; articles 77 through 134 of the UCMJ are known as punitive articles, if violated, can result in punishment by court-martial.

"Under the new changes, military courts are now courts of competent jurisdiction which now allow military judges to rule on investigative subpoenas and warrants for electronic communication very early in the criminal investigate process," said Root. "This is very exciting because it's something that our federal counterparts can do, and now, our military judges have that authority as well."