Don't you find it a little odd that there's only one superscript "th" on that report...all the others are in regular type.
In a word - yes!
Not really when you consider what the document represents. It looks like information was added to this document at various times. In other words, it was repeatedly inserted into a typewriter and new lines were added as required. It was not necessarily the same typewriter or typist each time. Also, it would be up to the typist whether to use the superscript "th" or the standard "t" then "h".
I don't. Even if a feature such as this were available, the odds of all personnel using the same typewriter, or even the same features on a typewriter are slim.
The date arrangements are passing odd to me on that doc. The first three date entries are what I'm used to seeing on military docs. (may, sep, nov) but they must have changed personnel with someone from Europe in December and June because the date format is reversed. 69DEC29? made me feel like I was driving in Great Briton again.
The way to make a supercript on a typewriter is to roll the platen half way up and type the degree mark or the th or the st and then return the platen to the oriiginal position to finish the line. Of course this will not reduce the size of the type. And when you try to do it again, you have to be a crack typist to get it at the same level on the second try. I used to have an Olympia typewriter in the '50s that had half line spaces that allowed you to do this more neatly -- but you still couldn't change the size of the type.