The Stonehenge assault was an operation undertaken by the Independent State Allied Forces in the early days of the Second Usean Continental War. Its goal was to eliminate the threat of the Erusian-controlled Stonehenge as quickly as possible. The operation was a complete failure: all ISAF fighters were shot down before reaching Stonehenge and no damage was inflicted on the railgun facility. Erusea would maintain its air superiority over most of the continent, forcing ISAF to continue its retreat to the east.