Our books are organized by the Library of Congress classification system. While you can use keywords or subjects to do a search, sometimes it can help if you start with a pre-selected group of items.
Military Science titles are found in one of the groups here: https://www.loc.gov/aba/cataloging/classification/lcco/lcco_u.pdf
For subclass U, "Military Science (General)", you can browse titles here.
For subclass UA, "Armies: Organization, Distribution, Military Situation", try this.
There are of course titles scattered throughout other call number areas, but this is still good to be aware of.
We have a few other sites that offer videos as well. One is titled "Kanopy". For this collection, we had individual titles once a year. They come and go depending upon use and interest. We have a few related titles in the history section now. They can be found here.