Final answer:
The narrator lists Titus and Cesar's roles to showcase their comprehensive service to the Crown, which extended beyond combat to include various other duties that were important for both military success and personal glory.
Step-by-step explanation:
The narrator enumerates the various capacities that Titus and Cesar assumed for the Crown during the war to show they served the Crown in other ways in addition to fighting on the battlefield. This is done to highlight the multifaceted roles individuals play in warfare and the recognition or glory they may seek from such service.
These roles included not just direct combat, but also logistical support, strategic planning, and cultural integration by promoting a sense of Roman identity. Throughout history, reputations were built on military glory, both for the significance it held in a soldier's life and the political power it could bestow upon Roman aristocrats.
Indeed, the military exploits and the pursuit of glory were central to Roman culture and the narratives shared by historians like Plutarch.