Oh, good to know that!
Now, about the training.
Watching the documentaries of the FETs and Lionesses, it seems like the training of these female clerks and drivers to go along with male foot patrols into hot zones was kind of made up as they went along.
You should also realize that, in the Marine Corps, all women (like all non-infantry men) go through Marine Combat Training before going to their MOS schools. MCT gives the basic knowledge necessary to do combat-related tasks like foot patrols.