Disclaimer: I don't own Shingeki no Kyojin or anything else.
Day 19: Erwin
Commander Erwin was looking through some old boxes when he found a sled. While carrying it through a hallway, he ran into Sasha and Connie.
"Commander! Can we have the sled? Please?" the pair begged.
"Sure," Erwin replied, "But share it with your squadmates."
The duo agreed and carried the sled to a snow covered area that was at an incline. On the way, they invited all of their squadmates that they ran into. "Okay everyone," Sasha said, taking charge, "Everyone get into pairs or groups of three so we can all take turns." The sled was large enough for two or three people at once, but it would certainly not fit the entire squad. Everyone hurriedly split up and awaited her next order. "Groups, line up at the top of the hill. The next group behind the group on the sled will push it for them. After your turn, carry the sled back up. Everyone got it?"
After some statements of agreement, Sasha and Connie went to the back of the line that had formed while she was talking, and Jean, who was at the front of the line, climbed onto the sled. Ymir then shoved the sled and it began sliding down the hill. When the sled reached the bottom, Jean pulled it back up the hill and headed to the back of the line while Ymir and Krista climbed onto the sled. Mikasa pushed the sled for them, and after their turn Ymir carried the sled back up. Eren, Mikasa, and Armin went next, followed by Reiner and Bertholdt. Finally, it was Sasha and Connie's turn. After that, they started over again, and this continued for a few hours.
Soon, everyone was tired and cold from playing in the snow all day. They headed to the Mess Hall, along the way running into Isabel, who took one look at the sled and asked to borrow it.
"Sure," Sasha replied, handing it over. Isabel then skipped off, dragging it along. She found Levi and Farlan cleaning some snow that Sasha and Connie must have tracked into the building earlier.
"Guys! Come on!" she said cheerfully, attempting to drag both her friends and the sled outside. Despite their protests, she would not give up until they agreed to go sledding. While the trio walked towards the same hill the youngest members had used, they came across Commander Erwin, whom Isabel invited to join them. The four followed the teenagers' lead by taking turns (this time one at a time) with the next person pushing the sled.