After Daniel Jackson realises the function of the 6+1 symbols on the Cartouche, a meeting takes place.
This meeting is attended by several high ranking officers. It seems to me that these 3 are the highest ranking officers - and each of them represents a different service:
Who are they and what do we know about them (rank, service record/ribbons)?
Any and all sources are welcome - be it better images, props, extras, behind-the-scene information, novelisation or scripts.