"Unit Citations" is used in two ways in the Training Manual.
Emperor's Hammer Unit Citations
If a unit has at least 6 members and at least 50% of those members perform a task, they may earn a Unit Citation.
TIE Corps Unit Citations
If a squadron has at least 6 members and at least 50% of the members present on the roster have completed a particular battle, they earn a Squadron Citation.
Additionally, units (and individuals) may earn titles for winning various competitions or for specific performances. Examples are listed below, but the list is not all-encompassing as many individual units and officers (squadrons, clans, squads, etc) have their own titles that change as new leadership arise.
While the title may change hands, the winners are permitted to include the title in their ID line or signature with the specifics of the award (ex - Wing Commander's Own, Wing XV March 2011).