"in the earliest days of the war, we saw the seemingly endless growth of an army born from the genes of a single man- Jango fett. But these soldiers were not faceless to me.each man quickly forged his own personality. I still think of my second-in-command, CC-2224- whom I called "Commander Cody"- with great fondness. I miss him to this day. Even though he eventually tried to kill me."

"it was never clear whether obi-wan learned about the inhibitor chips or if he just assumed Cody betrayed him."

The fact that Cody will probably die believing he killed obi-wan, and that obi-wan probably died thinking Cody betrayed him :'(