Beryl (FEF-004) UNSC Memory of Emerald Cove (FEF-005) UNSC Memory of Eriandus (FEF-006) Behind the Scenes The Aegis -class frigate classification was named after the Aegis , the legendary shield of Pallas Athena in Greek mythology, reflecting the frigate's largely defensive role in standard fleet doctrine. UNSC Navy ( Galactic Era