Two U.S. Air Force reservists and two navy servicemembers were among those wounded and hospitalized.
The identities and condition of the four service members are unavailable. Defense officials say as of now no US service members were killed.
Marine Col. Dave Lapan, a Pentagon spokesman, says initial indications are that the suspect, James Holmes, was not a member of the military.
A family emergency crisis center is set up at Buckley Air Force Base to provide support and counseling for the families of the wounded.
Holmes has been taken into custody in the deadly Denver-area shooting spree that killed 12 people and injured at least 50 others during a midnight showing of the movie Friday. The FBI says there is no indication the shooting is tied to any terrorist groups.
(Copyright 2012 by The Associated Press. All Rights Reserved.)