Kammala wannan jumla: Sarkin sarakuna Alexander Severus ya yi amfani da rundunar a yaƙin da ya yi da Sassanids a shekara ta 235. Daga baya rundunar za ta shiga cikin yakin Alexander Severus a kan Rhine Frontier. Kusan tabbas ya shiga cikin yaƙe-yaƙe na Gallienus da Franks a cikin 250s. L. Petronius Taurus Volusianus, wanda daga baya ya zama Prefect na Praetorian a cikin 260 da kuma Urban prefect a tsakiyar 260s, shi ne "Primus Pilus" na legion a wannan lokacin. Ya goyi bayan Daular Gallic na Postumus (260 <unk> 274) kuma babu shakka ya sha wahala sosai lokacin da Aurelian ya hambarar da Tetricus I a cikin wani zubar da jini
a yakin Catalaunian Fields (Châlons-en-Champagne) a cikin 274.