I loved those Avalon Hill games.
Back in the day a good friend and myself each copied/duplicated the maps and mounted them on corrugated cardboard then duplicated the pieces and mounted them on thinner pieces of cardboard.
Whenever we got together we'd bring our individual boards with the pieces pinned to the map, play a few turns, each repositioning our own maps then go home. In between each of us had plenty of time to study the map and layout strategy for our next session.
