Pelles was a large, highly aggressive UIR member during the Pendulum Wars which had a lukewarm alliance with the smaller Ostri Republic. The nation was a leading member in the UIR and home to large Imulsion stockpiles.
Prime member of the UIREdit
During the briefing of Operation Leveler, Major Hoffman thought Ostri was going to be a staging ground to attack Pelles. During the same briefing COG High Command decided by attacking Berephus city they could convince their foes that the Coalition wanted to invaded Pelles for its massive Imulsion stockpiles.
Sometime after the Pendulum Wars Pelles became a COG nation, and one year after E-Day Premier Deschenko retreated from Ostri to Pelles to constraint his defense. The nation, along with what remained of Deschenko's troops were killed when the Hammer of Dawn was used.