THAT E.F. Benson?

I was browsing the bibliography of LOA edition of Tuchman when I found this entry:

THE KAISER AND ENGLISH RELATIONS, by E.F. Benson

I rubbed my eyes: who? Surely NOT the author of that famous Mapp & Lucia series?

To my surprise, it was indeed the same author lol.

Now why did Tuchman include that book for Guns of August? Interesting...