 Claudius II further demonstrated his confidence in Probus shortly after Probus assumed the praefecture of Egypt, when Claudius commissioned him to intervene militarily in the neighboring senatorial province of "Creta et Cyrenaica," which had suffered an incursion by the Marmaritae.The Marmaritae were, evidently, a nomadic people who roamed the semi-desert territory known as the "Marmarica," which lay west of the Siwa Oasis in western Egypt and to the south of "Cyrenaica".Traditionally, Emperors hesitated to allow governors to undertake military action beyond the boundaries of their own province.