How Ants Helped During the Vietnam War - E.O.Wilson

"So, I was working on that in the ants and helping to this decode, we were decoding the ant pheromone language. About that time, the Army decided they wanted to literally sniff out the enemy in Vietnam, because there is so much danger, and these rascals coming out of their tunnels suddenly or advancing on you slowly through the jungle, and we didn’t know how to pick them up, figure it out when an attack was coming.
So, there was actually, I had only a marginal amount of this, I had hardly any at all, but I kept all that I knew about it was to analyze the odor of a human being, as we had been analyzing the odors and the chemicals released by ants to communicate, and to then have what’s called a sniffer scope, which would be set up so that down wind, you would turn the red light on when human odor came into it, and there were more than, in the course of this research was just valuable, basic research behind it."
-Here