B. to express reverence for the lost soldiers.
Reverence means ‘high esteem’; the speech not only focuses on them and their bravery, but emphasises on the extent of impact that they made, and how brave they were in such conditions.
A restatement of the thesis.
If this is how you've presented the question, Its a bit hard to answer it when one hasn't read these books. It'd be best if you'd put both books into a summary for us to go based off of, at most.