I have a question that I hope you will answer. Does the term casualties only refer to KIAs or is that a term used for injured as well?
Thanks,
Jane
Killed in Action
Wounded in Action (this is not a slight wound either, it is a wound that requires treatment by a medical officer)
Missing in Action, Presumed Dead
Died of Wounds (if you are evacuated to a medical station and die there, o/w no different than KIA)
This list is not all-inclusive, but it gives the most common categories.