United States armed forces-style insignia for the rank grade of master sergeant.
- Public domain - this image was placed in the public domain by its creator (see below).
- See description
- N/A - it is assumed that the original uploader is the creator of this image.
- International law prohibits copyrighting combatant identification and/or rank insignia, hence this image cannot be copyrighted and belongs to the public domain. This applies worldwide.