Ruth D. Kline

was a soldier from the 104th Training Corps who dies in the battle of Trost District.

Story
In the aftermath of the battle of Trost District, Annie Leonhart goes from corpse to corpse, apologizing to them. Ruth is among the corpses to whom Annie apologizes. As Annie stands above Ruth's corpse, Reiner Braun tells her that apologies will not make a difference.

Trivia

 * Ruth is not given a name in the manga, and instead is first named in the spinoff visual novel "Wall Sina, Goodbye".