Twinkle Islands

Twinkle Islands is the only island chain in Erusian territory. It is surrounded by the Spring Sea, which covered the boundaries of the Usean & Osean Continent.

Usean Rebellion (Op. Gambit)
In 1998, Usean Rebels have launched bombers to destroy the last remnants of the allied forces that were located at Twinkle Island AFB. Scarface 1 was sent in to single handedly eliminate all bombers & escort aircraft.

Usean Continental War - (Op. Judgment Day)
On September 26, 2005. Mobius Squadron (ISAF Air Force, 118th Tactical Fighter Wing)was sent to the region to destroy Megalith, a fortress designed to destroy fragments of the 1994XF04 asteroid. While heading towards the base, the remnants of Aquila Squadron (Erusean Air Force, 156th Tactical Fighter Wing) formed up to counter Mobius. It led to an air battle between the best of their countries, in the end Aquila fell to the ISAF Forces. Mobius 1 was able to destroy the power generators to gain entry to the main port. He destroyed the cruise missile & disabled Megalith. The cruise missile inside the fortress or outside were nuclear weapons is still a mystery to this day.

Sources

Ace Combat 2 (the game)

Ace Combat 04: Shattered Skies (the game)