The General Dynamics F-111 Aardvark was a supersonic, medium-range interdictor and tactical attack aircraft that also filled the roles of strategic nuclear bomber , aerial reconnaissance , and electronic-warfare aircraft in its various versions. Developed in the 1960s by General Dynamics , it first entered service in 1967 with the United States Air Force . The Royal Australian Air Force (RAAF) also ordered the type and began operating F-111Cs in 1973.
The F-111Cs gave the RAAF a powerful strike capability but were never used in combat.  The aircraft went through modernisation programs in the 1980s and 1990s, and the RAAF acquired improved weapons to maintain their ability to penetrate hostile airspace. Despite this, by the 2000s the F-111Cs were becoming outdated and expensive to maintain, leading to a decision to retire them in 2010 rather than 2020 as originally planned. The F-111s were replaced by 24 Boeing F/A-18F Super Hornets pending delivery of F-35 Lightning IIs in development.