DEPENDENT INFORMATION ON PUBLIC WEBSITES
The current DODIs conflict.
DODI 8550.01 says Public disclosure of family information shall be generic and not include specific information such as names or ages. This includes PII in photographs, videos, captions, and other media."
www.dtic.mil/whs/directives/corres/pdf/855001p.pdf
DODI 5040.07 says when members who are not military or civilian employees, a release is required,
www.dtic.mil/whs/directives/corres/pdf/504007p.pdf
The specific form required is DD Form 2830.
http://www.dtic.mil/whs/directives/infomgt/forms/eforms/dd2830.pdf
That form states:
"I hereby grant and release to the United States Government the following rights:
To use my name, or that of said infant or minor child, in any manner; photographs, likenesses, acts, poses, plays, and appearances made in connection with the said production to record, reproduce, amplify, simulate, filter or otherwise distort my voice or the child's voice and all instrumental, musical, and other sound effects produced by me or by the child; and to reproduce, duplicate, publish, exhibit, use or transmit the same or any parts thereof, by any means, in any manner and for any purpose whatsoever; and to do the same perpetually."
For cadets of the military academies under 18 years old to be covered, they also require a DD2830 signed by parent or guardian until they are 18.