I don't know if this was ever asked before but I'm asking now. What if a character already has veteran lvl 1 and you add long service on it. Will it go up another lvl or not. "LONG SERVICE During Season 11 any troop whose Troop Classification is listed as ‘Character’ also have the Troop Classification of Veteran Troop." That came from this season's ITS.
Veteran Troop Classification is not the Veteran Skill. Troop Classifications such as Garrison Troop, Headquarters Troop, Veteran Troop, Line Troops, etc do not have any inherent in game effect but can interact with Classified Objectives and Hunting Party. http://wiki.infinitythegame.com/en/Troop_Classification The Veteran Skill is something different. http://wiki.infinitythegame.com/en/Veteran
The Veteran Troop Classification allows characters to be able to do certain Classified Objectives and gives access to Adhesive Launchers in the Hunting Party mission.