There is a dead greek solider behind them, maybe he thought he would switch places and nobody would know. I also just noticed on the second picture it says 66/65. ??? Maybe he thought he would join your team.
think it happens when you taken over another base and you reload your men with the people in that base.
i had Japanese and Aztec in mix-up with my men as will.
last island i had a whole 2ea company's 40ea Aztec army with my group with their flag and all. not modded it happen? all i can say seen it after i won the last land 4, happen 1x only was weird to see
i know you can create soldiers out of people who migrate to your town, but to happen randomly is very rare
you might have a glitch the same thing happend to me once.
see?
i figured out what's wrong...i had taken over a norse town and after the people migrated, i think i picked up a bunch of people and dropped them when the soldier status came up i think i had picked up all greeks except for one norseman not sure it was a few weeks ago...
NOW what's bothering me is the RANDOM aztec hovel sitting outside of the japanese town that's completely enclosed by walls in the center of the island on the last japanese land... kinda weird...