A military appeals court says Major Nidal Hasan can be forcibly shaved.
The judge in his court martial held Hasan in contempt six times for appearing in court with a beard, which violates Army regulations.
Today, the U.S. Army Court of Criminal Appeals said Hasan did not prove the beard is an expression of religious belief.
His lawyers have indicated they will appeal today's ruling.
Hasan is on trial for killing 13 people and wounding dozens more in a shooting rampage at Fort Hood in 2009.