From the options presented, the excerpt that best supports the author's premise that war does not distinguish between military and civilian acts of battle is:
D."Evidently this was no vulgar assassin. The liberal military code makes provision for many kinds of persons, and gentlemen are not excluded."
The key to understanding this is in the second sentence: "<u>the liberal military code makes provision for many kinds of persons, and gentlemen are not excluded." </u> more specifically in the word "gentlemen", military members are never referred as gentlemen. So, one can agree with the fact both military members as well as "gentlemen" are included in the savage warlike category
So, for the reasons presented above, the final answer is:
D."Evidently this was no vulgar assassin. The liberal military code makes provision for many kinds of persons, and gentlemen are not excluded."