Yes it was. For a fascinating and informative reading of foundational radar technology, one might want to look at the books that came out of the MIT Rad Lab. PDFs can be found here:
https://www.febo.com/pages/docs/RadLab/
Being a long time student of control theory, I looked at vol 25, Theory of Servomechanisms. The treatment of the theory is clear and complete and I was astounded to realize that my first control theory text book (affectionately
paraphrased to "Dazzled and Hopeless" - I cant remember the actually spelling of the authors last names), contained almost a verbatim copy of the servomechanism volume. ahhh, the good times...
John