From Wikipedia

Rise And Fall Of An Empire

Episode Four

Revolution

Tiberius Sempronius Gracchus (168 BC–133 BC) was a Roman politician of the 2nd century BC and brother of Gaius Gracchus. As a plebeian tribune, he caused political turmoil in the Republic by his attempts to legislate agrarian reforms. Tiberius' political ideals, compounded with a gesture that was perceived as a request for a crown, eventually led to his death at the hands of supporters of the Optimates, the conservative faction in the Roman Senate.

Tiberius's military career started in the Third Punic War, as military tribune appointed to the staff of his brother in law, Scipio Aemilianus. In 137 BC he was appointed quaestor to consul Gaius Hostilius Mancinus and served his term in Numantia (Hispania province). The campaign was part of the Numantine War and was not successful; Mancinus's army suffered a major defeat. It was Tiberius, as quaestor, who saved the army from destruction by signing a peace treaty with the enemy. Back in Rome, Scipio Aemilianus considered Tiberius's action cowardly and persuaded the Senate to nullify the peace. This was the start of the political enmity between Tiberius and the Senate (and, of course, between Tiberius and Scipio Aemilianus).