A narration about those killed in battle includes:
زَمِّلُوهُمْ بِكُلُومِهِمْ وَدِمَائِهِمْ
Translation: Wrap them with their wounds and blood.
The wording supports preserving the marks of injury and omitting washing, while the cases of a person in major ritual impurity and a child raise additional intra-Hanafi questions.