|Part of Dark Age|
|Republic of the Sphere||Draconis Combine|
|Commanders and leaders|
|Paladin Max Ergen||Tai-shu Kambei Okamoto|
|Republic Armed Forces||Draconis Combine Mustered Soldiery|
Operation ERUPTIO was an offensive launched in 3149 by the Republic of the Sphere against the Draconis Combine. Intended to aid the beleaguered Federated Suns, ERUPTIO succeeded in several Combine-occupied worlds and culminated in the reclamation of Robinson on behalf of the Suns.