This led to the construction of the Strategic Orbital Linear Gun (SOLG), a massive Kinetic Energy Weapon that would drop shells from orbit to destroy missile silos. The ongoing arms race compelled Osea to develop atmospheric weapon systems under the Strategic Defense Initiative to counter Yuktobania's developments in missile technology. By the 1980s, Osea was in the midst of a cold war with the Union of Yuktobanian Republics, its rival superpower across the Ceres Ocean.

Over the course of the mid-20th century, Osea flourished and continued to expand its political influence around the globe. According to early navigational charts, Bana City and Oured existed for quite some time. The country's first capital was located in Bana City, but this was changed at some point to Oured. Osea was formed sometime in or prior to the 19th century. 1.5.1 Ulysses Impact Event and Usean treatyĪ view of the modern Osean capital city, Oured.Osea is also an allied country in Ace Combat Zero: The Belkan War. Osea is the player character's homeland in Ace Combat 5: The Unsung War and Ace Combat 7: Skies Unknown. However, due to previous tensions and miscommunication regarding the development of the International Space Elevator, the Kingdom of Erusea declared war on Osea in 2019, leading to the Lighthouse War. Despite the Circum-Pacific War against Yuktobania, which was orchestrated by Belkan extremists as revenge for the Belkan War, this policy of peace continued into the 2010s. In the 21st century, especially following the election of President Vincent Harling, Osea's expansionism was curtailed and the country diminished its military power to follow a more peaceful foreign policy. A rivalry also existed between Osea and Yuktobania, which led to the Cold War in the 1980s and 1990s. The country's aggressive nature directly resulted in major conflicts such as the Osean War, the Belkan War, and the Usean coup d'état. īy virtue of its world power, Osea held expansionist ideologies and annexed new territories throughout the 20th century. The country's achievements include the construction of the Strategic Orbital Linear Gun, the Arkbird (a joint program with Yuktobania), and the International Space Elevator.

Osea is also considered one of the world's foremost leaders in aeronautics and space-exploration development. Osea is a highly developed country that possesses a large population, an extensive infrastructure, a thriving capitalist economy, and a well-outfitted military force, the Osean Defense Forces. Its capital, Oured, is located on the tip of Osea's southeastern peninsula near Oured Bay.

Osea encompasses a majority of the continent's western landmass and shares land borders with Belka, Ustio, and Sapin to the east and Perbla to the south. Osean Defense Forces Osea, officially the Osean Federation, is a massive Strangereal country and international superpower located on the Osean continent.

Cold war timeline 3d