To find books, DVDs, maps, sound recordings, manuscripts, and much more - everything except articles - use a library catalog.
OskiCat = most UC Berkeley libraries
MELVYL = all UC campus libraries, including all UC Berkeley libraries
What's the difference? more details here
For each item make sure you know the name of the physical library, call number, and whether or not it's checked out, library use only, etc.
ancient middle eastern medicin*
click on a relevant title, look at the long form of the record, and try out subject headings you find:
medicine ancient egyptian
military history ancient babylon*
* = truncation symbol/wildcard: child* = child, childs, childish, childhood, children...BUT you must have a minimum of 5 characters (so war* doesn't work)
Make sure to note the library location, call number, and availability (checked out? on hold?) for each item.
Call numbers are on the spine of the book; learn how to read them so you can find what you need on the shelves.