It's 1944, you're a bomber pilot in the United States Navy, flying missions over Southeast Asia. It's a dangerous job, but you've got a great crew: there's Knute, a.k.a., "Swede", the navigator, a quiet, big-hearted 18-year old blonde kid from northern Minnesota; Tony, the bombardier, a tough-talking street hustler from Brooklyn who's really a Mama's boy; Larry, the tail gunner, a farm boy from Kansas; Bobby, the co-pilot, a laid-back kid from California; Leonard, a.k.a. "Glasses," the radio operator, a nerdy college student from Vermont, who operates the radio. Everyone picks on Leonard because he'd rather read books about Southeast Asia during off-duty hours than hit the bars.
On one mission, you hear an awful sound to your left: the sputter, sputter, sputter of an engine going out. Your plane starts losing altitude, and when it's clear you won't make it back to the carrier, it's bail out time, and soon you're parachuting onto unknown territory. You have a general idea of where you are and where you need to go to reach safety, but your emergency rations aren't enough to feed you on your long journey to safety.
That nerd Glasses might be your life line. One of his interests is botany — he's always looking at plants on the base — and so his flying kit includes a book called Emergency Food Plants and Poisonous Plants of the Islands of the Pacific. And so now the crew knows which plants are food — and which are poisonous — as they make their way across the jungle to a safe haven.
The little fictional lead-in above sets up one of my recent finds in the Internet Archive (via Flickr Commons). While looking in the Flickr Commons, Google Books and Hathi Trust for images of the Moringa oleifera plant, I ran across an ink drawing of the moringa plant in a book from the U.S. War Department that was published in 1943 (I also found the beautiful 19th-century painting that I used in my post about Moringa Leaves). Reading the introduction, I learned that the book was written for members of the U.S. military to help them survive on their own ("live off the land") if they were separated from their unit or escaped from a prisoner of war camp.