The Bravedawn was a large troop transport mentioned in a short story that was posted on one the planet Cularin's HoloNet nodes during the time of the Clone Wars. In the story, the Bravedawn was said to be one of the largest troop transports in use with the Thaereian military, and was commanded by the Nikto Commander Kulkis.
Sources
The Best Defense on Wizards.com (original site is defunct) (Mentioned only)