Usean Continental War
During the Usean Continental War, the Usean Rebel Forces converted an abandoned castle in the Amber Mountains (dubbed "The Keep") into a supply base for launching attacks against the Usean Allied Forces. On April 14, 1998, Scarface Squadron was dispatched to destroy the rebel forces stationed there, allowing the Allies to regain control of the mountains soon after.
Second Usean Continental War
Due to its close proximity to Erusea, Amber was at the forefront of Erusian hostilities throughout the 1990s. The nationalist Erusian government was extremely militaristic and publicly supported the expansion of Erusea's domain. By 1996, the Erusea was mobilizing its armed forces near the Amber-Ugellas border. Although they did not invade, the Erusians' posturing prompted the Federation of Central Usea to station its forces along the border region to safeguard Amber and neighboring Ugellas. The FCU forces would eventually be recalled from Amber following President Sinclair's announcement of the Ulysses 1994XF04 asteroid's approach.
Soon after the Ulysses planetfall, Amber was one of the Usean nations that took action to address the refugee crisis. As a member of the Central Usea Treaty Organization (UTO), Amber admitted and sheltered an unknown number of Usean refugees. When Erusea launched its invasion of San Salvacion and the Stonehenge Turret Network in August 2003, it presumed that Amber allied itself with the ISAF. Regardless, Amber soon fell under Erusian control following the ISAF's retreat to the east. One of the final engagements of the Second Usean Continental War would be fought in the Whiskey Corridor between the Amber and Lambert Mountains.
Usean Corporate War
Amber's status during the simulated Usean Corporate War is unknown. In 2045 at the height of the conflict between General Resource Limited and Neucom Incorporated, UPEO A.I. pilot Nemo was dispatched to attack a Neucom missile-launch facility in the Amber Mountains before it could be used to strike cities under GR's control.
- ↑ 1.0 1.1 "Overseas Troops To Return Home Temporarily", Usea Today: Asteroid on Collision Course With Earth! Published April 21, 1996.
- ↑ Ace Combat 04: Shattered Skies.
- ↑ Tin Castle, Ace Combat 2.
- ↑ Tin Castle, Ace Combat: Assault Horizon Legacy.
- ↑ Rising High, Ace Combat 2.
- ↑ Rising High, Ace Combat: Assault Horizon Legacy.
- ↑ Whiskey Corridor, Ace Combat 04: Shattered Skies.
- ↑ Claustrophobia, Ace Combat 3: Electrosphere.