In the original Black Cat run, judo tricks lesson 18 was missing (Lesson #17 was in Black Cat #17 and lesson #19 was in Black Cat #19).
This page -- featuring an army officer as her foe -- is not a reprint. It may be the missing lesson #18.
Also, the following text story is from #18.
The first page are lessons 5 and 6 re-edited to fit on one page. The second page are lessons 13 and 14 re-edited to fit on one page.