I think plastic army men were pretty much standard issue toys for most boys in the 1970s. We had the Marx Battleground play set.

Marx Battleground Play Set
This is the Marx Navarone play set from the JCPenny Christmas Wishbook. I wanted this set really bad also.

Marx Navarone Play Set
And this was another cool set from Marx called Desert Fox.

Marx Desert Fox Play Set
Even our dad used to play army men with us. We had a huge dirt pile in the backyard and our father would help us set up the army men posed in a classic American versus German configuration. The cool thing was, he was planting firecrackers in strategic places while helping us set up. Then when the battle was ready to commence he would light the firecrackers one at a time as we watched the battle unfold. Those were some good times.
Oddly enough not a single piece of that set survived. I clearly remember what happened to the last surviving army man in that set. I don’t remember which army man it was, but it was an American soldier. I will not outline exactly what happened (as I don’t want to give ideas to younger readers) but it involved a model rocket engine, an exacto knife, the army man, and an ingition device. All I can say is not even a single piece of molten plastic was left behind.