Ruth D. Kline

Rūsu D. Kurain (ルース・D・クライン) was a soldier from the 104th Training Corps who fought in the battle of Trost District.

Battle of Trost District arc
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 was not given a name in the manga, but instead was first named in the spinoff visual novel "Wall Sina, Goodbye".