 The Roman army is defeated and captured, and Tiberius Gracchus has to negotiate a surrender agreement. Now, Tiberius Gracchus was not in charge of that army, but he had credibility with the Spanish tribes who had defeated the Romans, and he was able to negotiate this surrender agreement. But when the Roman armies returned from Spain, the opponents of Tiberius Gracchus' commander negated the entire agreement and wanted to send the entire army back to Spain.