sentences:  Julius Caesar pardoned young Cato and allowed him to keep his father's property.In spite of being pardoned by Caesar and allowed to return home, Marcus joined his brother-in-law Brutus and his ally Gaius Cassius Longinus, who both assassinated Julius Caesar on March 15, 44 BC.Afterwards they fled Rome headed for Greece, where Marcus Cato fought in both of the battles of Philippi.