Which generals commanded Vitellius's forces at Cremona?

The generals who commanded Vitellius's forces at Cremona were Aulus Caecina and Fabius Valens, making this the correct answer. In the context of the Year of the Four Emperors, 69 AD, Vitellius was one of the claimants to the Roman imperial throne, and his military strategies and leadership were crucial during the conflicts that arose during this tumultuous period.

Aulus Caecina played a significant role in leading the troops against the forces of Vespasian, who was also striving for control of the empire. Alongside him, Fabius Valens contributed to the command structure and operational direction of Vitellius's military efforts. Their combined leadership was pivotal at the Battle of Cremona, which was one of the key encounters in this civil war.

The involvement of Tiberius and Vespasian in the first option is incorrect as Tiberius had died long before this period, while Vespasian was actually an opponent of Vitellius. The names Julius Flavius and Marcus Aurelius presented in another option do not correspond with these historical events, as neither was tied to Vitellius's command. Likewise, the names recorded in the fourth option, Lucius Verus