They also learned from those enemies. The operations of Scipio were an improvement on some of those who had previously faced Hannibal, showing a higher level of advance thinking, preparation and organization. (Compare with Sempronius at the Battle of the Trebia River for example). Scipio's contribution was in part to implement more flexible manoeuvre of tactical units, instead of the straight-ahead, three-line grind favoured by some contemporaries. He also made better use of cavalry, traditionally an arm in which the Romans were lacking. His operations also included pincer movements, a consolidated battle line, and "reverse Cannae" formations and cavalry movements. His victories in Spain and the African campaign demonstrated a new sophistication in Roman warfare and reaffirmed the Roman capacity to adapt, persist and overcome. See detailed battles: