Final answer:
The statement that Varro and Paullus agreed on a battle strategy at Cannae is false; their disagreement and lack of a unified strategy led to a significant Roman defeat by Hannibal.
Step-by-step explanation:
The statement that at Cannae, Varro and his co-consul Paullus reached an agreement on how they would fight Hannibal is false. The Battle of Cannae in 216 BCE was a significant engagement of the Second Punic War. The Roman consuls, Lucius Aemilius Paullus and Gaius Terentius Varro, had conflicting ideas on how to confront Hannibal. Unfortunately, they did not agree on a unified strategy, and this disunity contributed to the disastrous Roman defeat. This battle is remembered as one of the worst defeats in Roman history and was a classic example of Hannibal's military genius, which enabled him to trap and decimate a numerically superior Roman force.