Medevac was a group of three Lambda-class T-4a shuttles that served in the Alliance Fleet during the Galactic Civil War.
They transferred wounded from the evacuation of Brigia during Operation Strike Fear to the EF76 Nebulon-B escort frigate Redemption.
The transfer was interrupted by the arrival of the Imperial Nebulon-B frigate Warspite which began launching TIEs. The actions of Red Squadron, and particularly Keyan Farlander, protected the transfer and all Rebel ships escaped into hyperspace.
A simulation based on that event would later be part of the New Republic's training program. When Wedge Antilles reformed Rogue Squadron, this test was used as one of the benchmarks for candidates to enter the squadron.