Usean Continental War
On June 1, 1998, during the Usean Continental War, a convoy of Usean Rebel Forces' C-17s established a supply line through Chopinburg. In order to lessen the enemy's resistance in the area, the Usean Allied Forces deployed fighters to disrupt the rebels' resupply operations. Scarface Squadron arrived at Chopinburg in the midst of the rebels' airdrop, which was successfully disrupted.
Second Usean Continental War
In the midst of the Second Usean Continental War, the Independent State Allied Forces recaptured Istas Fortress, its former GHQ on the eastern edge of Chopinburg, on March 7, 2005 and made a push towards the city of Los Canas. One week later, at 0331hrs, ISAF ace Mobius 1 was dispatched on a solo mission in the region north of Chopinburg to escort two Air Ixiom airliners carrying the engineers responsible for Stonehenge and their families. The engineers were offering vital information on the STN in exchange for permission to defect to an ISAF member state. The two airliners, Flights 701 and 702 fell under attack by Erusian fighters despite carrying civilian passengers. Mobius 1, single-handedly engaged and shot down the fighters pursuing the airliners, which safely arrived in ISAF territory. With the information supplied by the engineers, ISAF was able to commence Operation Stone Crusher to successfully destroy Stonehenge.
Usean Corporate War
During the simulated Usean Corporate War between Neucom Incorporated and General Resource Limited, Chopinburg was used to conduct joint exercises between the UPEO's Special Armed Response Force (SARF) and the General Resource Defense Force (GRDF). As part of the cooperation between SARF and GR, Nemo performed training exercises with GR's ace Abyssal Dision and his wingman Keith Bryan. During the exercises, Neucom dropped chemical containers within the area. Through the combined efforts of the UPEO and GRDF, the chemicals as well as the Neucom transports and escort fighters were destroyed.
Some time later, Neucom's nanotechnology research facility in the Chopinburg region would experience a mishap when a large quantity of experimental nano-bytes (intended for building/construction purposes) went out of control and began to spread through the area. The nano-bytes began breaking down organic matter in order to manufacture and replicate more of themselves. A squadron consisting of Nemo, Erich Jager and Rena Hirose was equipped with Anti-Nanobyte Bombs to neutralize the nano-bytes. The UPEO pilots successfully disabled the nano-bytes, but Hirose's Su-37 Super Flanker-R drifted into the range of a nano-byte cloud and was attacked, driving her to the breaking point as they began consuming her. Nemo managed to neutralize the threat by firing an ANB at her aircraft and saved her life.
- ↑ 1.0 1.1 Cuckoo's Nest, Ace Combat: Assault Horizon Legacy.
- ↑ Ace Combat 04: Shattered Skies.
- ↑ Cuckoo's Nest, Ace Combat 2.
- ↑ Tango Line, Ace Combat 04: Shattered Skies.
- ↑ Escort, Ace Combat 04: Shattered Skies.
- ↑ Enter Dision, Ace Combat 3: Electrosphere.
- ↑ Bug Hunt, Ace Combat 3: Electrosphere (JP).