Quote Originally Posted by The Celt
While I don't know enough to go into details, the Republic's armed forces were under the will of a Consul and a Pro-consul.(Citation needed) Though not holding quite as much power, they sorta acted like a US President and Vice president to Rome. They were elected from the senate body,(At first anyway..) and they were in charge of the armies and legions. They held four year terms,(or was it just one year?) and then handed their power over to another elected senator. I'm not sure on how many times one person could become Consul.
I'm sure one of EB's Roman experts will gladly fill you in on the more specific stuff.
You have the idea but, no...

Two equal consuls, each with power of veto over each other. Each province had it's own pro-consul, and the terms were 12 months.