I just finished playing the Cantabrian War scenario as the Romans. There were a lot of exciting battles and tough decisions, but as the scenario approached the end, I began to wonder if everything was working correctly.
I never received any new forces as the Romans. I only had the two legions of Quintus Aulius Tubero (a complete idiot) and Titus Statilius Taurus (a capable commander) through the whole conflict, combined with some auxiliaries and militias I recruited during the game. It was never quite enough to beat the enemies decisively. There were no options to ask for more troops from Rome or anything. Historically, the Romans send several legions to defeat the Cantabrian tribes.
Nevertheless I was able to capture some objective cities from the enemy and when the scenario ended, I had the most points. However, it was still considered a defeat by the game, which the following screenshot proves. The text is also bugged.