Gen. Dunford: Transgender individuals should not be separated from service

The top U.S. general told Congress transgender troops should be allowed to serve

"Everyone just keep, hold on until we get through all the fights we're in," Mattis told reporters at the Pentagon on August 31.

Trump signed a memo in August formally directing the Pentagon to ban transgender individuals from serving in the U.S. military. That memo also directed the Pentagon to stop all gender-related surgeries, with the exception of those individuals whose procedures are already underway. However, the memo allowed for Mattis to come up with the policy on what to do with those currently serving.

The Pentagon has until February 21, 2018 to decide what to do with transgender individuals currently serving, per Trump's formal policy guidance.

ABC News' Paola Chavez contributed to this report.