He knew that the Carthaginian preparations to attack Castra Cornelia were continuing , and with the first signs of the spring he launched a preemptive strike .
On the basis of this information , Scipio elaborated his plan for the battle .
Scipio knew that the Carthaginian preparations to attack Castra Cornelia were continuing , and with the first signs of the spring Scipio launched a preemptive strike .
On the basis of this information , Scipio elaborated his plan for the battle .