The outbreak of the Civil War, caught the legions stationed in a round belgica in a dilemma. Two legions had IMMEDIATELY declared for S. Marius Manus. This had left three legions that were far from certain to be on either sides Order of Battle. Publically all three legions (XIII, XV and XXX) were loyal to the Emperor. However after "Lights Out" the soldiers had discussed the political situation in hushed tones.

For Legio XV, the decision was easiest. They had not been in as close contact to S. Marius Manus and his legions, as the other two.
Legio XV and XXX had not objected to the appointment of Praetor A. Maximus Terpus to command them. The Praetor was new to his rank, but he had developed something of a reputation in Hispania. Nor had the blandishments of Marius Manus proven able to sway them from finally declaring for the Emperor. promised loot, did not match the regular pay the Emperor's service offered!

With Legio XIII there was a sad misjudgement. The Emperor opted to sendan order to this legion. Simply put, it was ordered to attack their former comrades in arms, Legio IX under Marius. Immediately the troops, who had been paraded to receive their new orders, commenced an unplanned mutiny. They had been tested, and perhaps with suitable leadership and leadership being there that day, they would have reacted otherwise.

By days end S. Marius Manus had gained a legion and Rome stood on warning that No one's allegiance could be counted upon, as vouch safed. Both sides had lost legions when the loyalty of commanders and troops had not been suitably bolstered before they were committed to an uncertain future.