Unfortunate Souls is the squad story focused on Jimmy, Odin, and Lily. The combat mission for this is called Company of Zeroes. This squad story is available at the earliest in Chapter 5: Behind the Frontlines after Odin and Lily join.
This map takes place in the same one as the first part of Chapter 3: Rangers in the Storm, with the exception that it is no longer nighttime and raining, and Squad E cannot access the west side of the map. There are several watchtowers on the west side, giving Imperial troops a vantage point to attack and intercept.
Jimmy, Odin, and Lily will start on the path connecting the west and east sections of the map, and must make their way along the east path south to capture the Imperial base camp tucked in a corner, across the south most watchtower.
Please, listen carefully
"One of our patrols encountered the enemy. We're uncertain of their position, and their radios seem to be down. Providing backup will be difficult. I'm hoping they can make it on their own.
Description: Capture all enemy camps in order to secure a safe route. If Odin, Jimmy, or Lily run out of luck, then the mission will fail.
"Remain calm, Claude. Trusting your subordinates is one of the most vital parts of being a leader."