Magister militum

The original command structure of the Late Roman army, with a separate *magister equitum* and a *magister peditum* in place of the later overall *magister militum* in the command structure of the army of the Western Roman Empire

Magister militum (Latin for "master of soldiers"; pl.: magistri militum) was a top-level military command used in the later Roman Empire, dating from the reign of Constantine the Great. The term referred to the senior military officer (equivalent to a war theatre commander, the emperor remaining the supreme commander) of the empire. In Greek sources, the term is translated either as strategos or as stratelates.