At some point, he received a promotion to captain.
Camaran was a minor character in Peril on Naboo, a three part campaign in Wizards of the Coast's Secrets of Naboo released in 2001. Within the text, he is identified as a Lieutenant. Later, in 2013, the Rogues Gallery: Naboo's Finest! article in Star Wars Insider 145 identified an extra from Star Wars: Episode III Revenge of the Sith as "Captain Nathaniel Camaran," providing an image, first name, and rank for the Security Guard.