Conversation so far:
Did Edgeworth David do any writing in Edgeworth David's later years?
In 1931 he published the Geological Map of the Commonwealth and the accompanying Explanatory Notes.
Are there any other interesting aspects about this article?
In September 1920, David was created a Knight Commander of the Order of the British Empire for services during the war.

Question: What did he do to receive that honor?
Self-contained rewrite: What did Edgeworth David do to receive the honor of Knight Commander of the Order of the British Empire?