The crew's UH-60 chopper went down some time after 5:49 pm in the northeast portion of the Fort Hood Range, according a statement released by the Army.
Emergency crews found the wreckage after an extensive search.
The members of the Division West, First Army were on a routine training mission at the time, the Army said, NBC News reported.
The cause of the crash was under investigation.
The Army said it would not release the names of the victims until 24 hours after next of kin could be notified.