On May 30, 2019, Refil Squadron and Gram Squadron took part in Operation Dual Wielder over Chopinburg Rainforest, where the two squadrons prevented Osean fighters from securing the airspace. The entire squadron was ultimately shot down in the ensuing battle.
On September 19, 2019, Refil took part in the battle over Farbanti, defending the city from invading Osean forces. The battle ultimately ended in Osean victory as the city was captured with the death of various Erusean leaders.
Following the destruction of Usea's satellite network, Refil Squadron allied themselves with Erusean conservatives. On October 1, 2019, the squadron targeted an EASA transport flying over Anchorhead Bay, but were intercepted and shot down by Strider Squadron.
- Refil was the sword of Regin, from Norse mythology.