I was reading through my copy of the Chronicle of the Roman Republic by Phil Matyszak and stumbled upon references to "Military Tribunes". Here's what the author had to say:
Military tribunes or to give them their official title - tribuni militum cum consulari potestate - came about in 444.
The powers of the consuls were divided between two new magistrates - the military tribunes and the censors. they could be chosen from both the patricians and the plebeian and the system was a compromise to the idea that the consulship should be open to both orders.
In any year the people could choose to elect either consuls or military tribunes, and while there were always two consuls in a year, (If consuls were elected) there could be two, three, or even six military tribunes. (Sometimes their colleagues, the censors, were also described as military tribunes making the the number even higher.) The sysstem lasted until 367 and was abolished by the Licinian Law
This raises far more questions for me than it answers. Ostensibly the election of multiple "Consuls" would be useful in leading separate armies (as Praetors would). But a look at my timeline indicates that there were few wars of note in this period except the spectacular capture of Veii and the Sack of Rome by Brennus. In addition I have another reason to doubt the "military" nature of this office: wouldn't a tribune's military imperium evaporate on crossing the pomoerium? How would they ever convene the Senate or Tribal Assembly?
As Matyszak relates this was a compromise amidst the Conflict of The Orders. But if this was a way for plebeians to win seats of power I was shocked to see that L. Quinctius Cincinnatus (a Patrician hardliner) himself served in one of the first years Military Tribunes were elected (could have been his son). Reading the UNRV consul lists brought up another little enigma. The Licinian Rogations occured during a run of Military Tribunes from 391 to 367 BCE. The Licinian Rogations a.k.a. "the anarchy" was that time period when the Tribunes of the Plebs held out for access to the consulship. Then what do they do but elect military Tribunes for several years more. This doesn't make any sense! Why commit to a knock-down drag-out war for access to the consulship when Military Tribuneship was already available to plebs? I found another source that contradicts the UNRV consul list. It maintains that the Licinian Rogations came at the end of this period (367) this seems to make sense. (Lex Licinia, Licinian Rogations) Someone please clarify this!
The last question is pretty much semantics the official title was "tribuni militum cum consulari potestate". Forgive me but didn't Consuls hold imperium rather than potestas?