Library books for this topic can be found in the Nonfiction section under the Dewey Decimal number 940.3.
Poetry written during or about world War I can be found in the Nonfiction section under the Dewey Decimal number 808.81.
There is also a wide range of fiction based on events, characters and set during World War I available in the Historical Fiction section.
If you are using Destiny to search for Library materials, use this Search Term: World War, 1914-1918.
A search for 'Russian Revolution' will give you 182,729 results.
I recommend you further limit your results using content type, for example, Book chapters, Journals, Research reports of Primary Source content.
When using EBSCO for this topic, I recommend searching:
Recommended search term = Russian Revolution
A search for 'Russian Revolution' will give you 24 results.
Some are documentaries and others are films.
I recommend you further limit your results using the subject filter.