House Democrats want to know if President Trump spoke with anyone from the Pentagon before deciding to ban transgender people from the military in July.

One hundred and fifteen House Democrats signed on to a letter asking for all communications between the White House and Pentagon that would back up Trump's statement that he was "doing the military a great favor" with the ban.

In August, Trump said, "As you know, it's been a very complicated issue for the military, it's been a very confusing issue for the military, and I think I'm doing the military a great favor."

The House Democrats want to know if there's any documentation backing up that assertion.

"If senior military or Department of Defense personnel asked that the president ban transgender individuals from military service we request access to any letters, e-mails, telephone transcripts, meeting logs and minutes, or other materials that document such requests," the letter stated.

The letter added, "We seek access to these materials in order to determine whether the president, his national security team, and military leaders are actively coordinating policy with one another, or whether the president's transgender ban announcement reflected a breakdown in communication."

Initial reports after the president's late July tweet indicated Trump caught the Pentagon off-guard with his tweeted announcement of the ban.

Defense Secretary Jim Mattis has formed an advisory panel of experts who have until January to come up with a plan.

Transgender individuals currently serving in the military have been allowed to stay in the service while the policy is being formed.