After Commander Chakotay crash landed with shuttlecraft on a planet in the Delta Quadrant in 2374, he was brainwashed by the Vori to fight in their defense contingent. Namon was the soldier who "found" Chakotay in the jungle-forest, gagged him and brought him to his superior, Brone.
Namon made jokes about another soldier in the fourth contingent, Rafin, as it was Rafin's first time in the war zone. On the next day, Namon accompanied Chakotay in his search for his shuttlecraft. During their walk, they were attacked by two Kradin soldiers and Namon was shot, "nullified" as the Vori named it.
During a ceremony, Namon was stripped off his clothing and placed into a blanket. He was then turned around onto his front to find his way into the wayafter. Chakotay received his belongings as his Starfleet uniform was too colorful to walk in the woods. (VOY: "Nemesis")