The 22nd Mobile (Daedalus Omega) was created in 2409 with the evolution of Battle Group Peacemaker into a full-fledged fleet. Some of the ships involved with the new fleet include the USS Europa, USS Kendra, USS Varina, USS Agamemnon, USS Giselle, USS Freyja, and USS Yoshimoto. The fleet was initially based out of Earth Spacedock, and would later transfer to Deep Space Nine and its permanent home of Starbase 220.