In his discussion of the nomenclature of auxiliary regiments, G. L. Cheesman stated his belief that the adjectival form of a provincial name such as Cyrenaica, Moesica, or Syriaca implied not original recruitment in those provinces, but recent, perhaps lengthy, service in them. The existence of such units as cohortes II Hispanorum scutata Cyrenaica, I Lusitanorum Cyrenaica, and I–IV Thracum Syriaca lend solid support to his argument. It would have been entirely reasonable for a unit serving on an expedition to be known by the province with which it was usually associated, e.g. ‘the Syrian regiment of Thracians’. This would be especially true where there were a number of other regiments with the same ethnic title and otherwise indistinguishable, e.g. the numerous regiments of Thraci and Hispani. Here, the sense is rather, ‘the Syrian regiment of Thracians’. Subsequently, Cheesman qualified his generalisation when he observed that there must have been occasions when a form such as Cyrenaica would equal Cyrenaeorum? His modification was prompted by difficulties associated with regiments lacking an ethnic title and bearing only an adjectival form of a provincial name. He cites as examples the units simply designated as I–III Augusta Cyrenaica. It is to be assumed that he saw the same argument as applicable when he appended the ala I and the cohors I Britannica to the list of units whose origin he gives as Britain.