Retro Combat Evaluation (HARD)

 is an Online Co-Op Mission in Ace Combat Infinity. It takes place over the city of Tokyo, Japan, where players flying piston aircraft work together to destroy targets.

Briefing
''The AA Aviation Plant has created designs for piston aircraft and has successfully produced them. They have now requested that we let some of our best pilots take control of them and gather combat data. This data will be used in future research. The test will take place in Area J4D against union forces acting as enemy units.''

A Rank
''We've managed to provide the researchers with results beyond their expectations. This is fine data that reflects the skills of our pilots.''

Trivia

 * The background music used in this mission is a remix of "Invincible Fleet" from the Ace Combat 04: Shattered Skies Original Soundtrack.