Various types of wounds or bruising patterns on the body could be determined as being inflicted before or after death using certain methods.
Different types of bruises would help to identify what would have caused them or how much force was used in that area.
Those types of things could help to identify if a weapon was used or if the attacker used a certain hand or foot to inflict the damage.
Those types of things could help to identify if there was a weapon that needed to be found related to the crime, or if the culprit favoured using a certain hand and other similar details that could help them get closer to narrowing down their search for the culprit.
Certain pressure being applied to different parts of the body could leave behind bruising patterns, and the same could be said for any marks that could be left on any clothing.
Any of those tiny details could become very important for any investigation.
