THE RAT PATROL followed the adventures of an elite team of commandos of 111th Armor Recon, attached to the Long Range Desert Group, as they wreaked havoc with Rommel’s Afrika Korps during WW II. Led by the charismatic Sergeant Sam Troy, our heroes often found themselves pitted against their German nemesis DAK Hauptmann Dietrich. And yes, there is evidence that it was popular with folks in Vietnam.
Here's the Hasbro piece by the way (below). By today's standard, it isn't much, but to tell you the truth, when this thing first came out, I wanted one as badly as everyone else.