Which immediately made me remember some of our Vietnam War era training books:
Ah, Google. That took me about 12 seconds to find. Haven't seen that in decades--or even thought of her!
The South Vietnamese had their own version of the attractive character for their manuals.
Face it, your market was composed of young men. Many who weren't college bound. You do what works.
We forget how much better our troops are these days compared to the past, whether our Army or the vaunted German army of World War II.
Clearly, even the German army had problems by 1943 after the cream of the crop was left dead on battlefields all over Europe and Africa.
By the time I was in uniform, those training aids were long gone.
Let's not go back to the days when we needed comic book training manuals.