The Avenger is a dedicated strike fighter, intended to conduct high-speed, low-level attacks on ground targets, with armoured vehicle formations and high-value strategic assets such as munitions dumps forming its principal prey. The Avenger Strike Fighter boasts firepower that exceeds most other Imperial aircraft of its size, and its particular reputation as a tank-killer is due to the Avenger bolt cannon it carries.
The Avenger is an ancient design, believed to originate on Ancient Terra sometime during the Age of Strife. It was adopted by forces loyal to the Divine Saint Sebastian Thor during the bloody wars of faith and schism now called the Age of Apostasy. Its effectiveness is such that it is now a staple of any Imperial Navy air support mission, holding a glamour of holy import in the wider Imperium. The Avenger is often specifically requested by the Adeptus Sororitas should they require close support in their purgations.