Having thus almost beyond expectation crossed the marshes, and, finding that Flaminius was encamped in <a class="linkToPlace" target="_blank" href="/place?placename=Etruria&groupId=582&placeId=1089">Etruria</a> before the city of Arretium, he pitched his camp for the present at the edge of the marshes, with the view of refreshing his forces and getting information about the enemy and about the country in front of him. On learning that this country promised a rich booty, and that Flaminius was a thorough mob-courtier and demagogue, with no talent for the practical conduct of war and exceedingly self-confident withal, he calculated that if he passed by the Roman army and advanced into the country in his front, the Consul would on the one hand never look on while he laid it waste for fear of being jeered at by his soldiery; and on the other hand he would be so grieved that he would be ready to follow anywhere, in his anxiety to gain the coming victory himself without waiting for the arrival of his colleague. From all this he concluded that Flaminius would give him plenty of opportunities of attacking him.
Walbank Commentary