Warhammer 40K: Weeper's Atonement Crusade

A different Lamenter, a different expedition. When the protagonist takes them back to the previous timeline, and when they can be seen in major battles, a different Atonement Expedition begins. The protagonist is wearing a suit. Although it can be resurrected, it will hurt. The introduction is weak, so move on to the main text. Please forgive me for the limited writing capacity.