Bonus is dependent upon when soldier is awarded and each mission awarded soldier participates in.+1 Aim and Will for each mission completed with no soldier deaths, up to a maximum of +10.If using savescumming and Hidden Potential to get the most out of leveling, keep in mind that some of the medal powers will change the stats of your soldiers.Thus, if your soldiers are immune to panic due to Defender's Medals or Neural Damping, you can consider ignoring medal effects that improve will.
However, if soldiers with medals are killed the medal will be available again for awards 2 missions afterwards. There is a cap on the number of medals that can be present on the entire pool of live soldiers.
They appear as a new option in the Barracks menu.