Sitting in the doctor’s office recently, I found a old copy of a Reader’s Digest issue (did you think there would be a current issue?) and browsed the humor sections, stopping on the Humor in Uniform section.
Here’s the Defense Dept’s definition of a “first page”, taken straight from the manual:

“If the document has no front cover, the first page will be the front page. If it has a cover, the first page is defined as the first page you see when you open the cover. In some documents, the title page and the first page may be the same.”

You’re welcome.