The Armstrong replaced a Defiant-class starship fighting the Borg during their incursion in 2376. (TNG video game: Armada) On stardate 54566.1 (July 26, 2377), the Armstrong was at Starbase 176 when the sector was invaded by Borg forces. The ship was left derelict, it's crew either killed or assimilated. A task force led by the USS Enterprise-E recovered the Armstrong and the other abandoned ships. When the Borg attacked a second time, the rebuilt fleet defeated them. (TNG video game: Armada II mission: "Recovery")