A little bit of military history, to start us off:
Much of today's military continue to follow principles that ancient armies developed and then the Roman Army perfected. For example, the phalanx and shield-wall, which required extraordinary discipline to maintain the soldiers in tight formation.
Now, this shield-wall is mostly stationary, and only holds together for a short time, but it gives an idea how shields can interlock and be used:
Much of today's military continue to follow principles that ancient armies developed and then the Roman Army perfected. For example, the phalanx and shield-wall, which required extraordinary discipline to maintain the soldiers in tight formation.
Now, this shield-wall is mostly stationary, and only holds together for a short time, but it gives an idea how shields can interlock and be used:
At Disney World's Epcot Center, we took the ride, Spaceship Earth as it described a history of communications. Spaceship Earth, like most Western Civilization courses, traces back from Egypt to Greece, and then Rome. Bypassing most of the Fertile Crescent cities (clay tablets are more portable than cave walls!) and the Eastern Civilizations in India and China altogether.
It's... cognitive dissonance, to think about how Rome is held up as this pillar of civilization (granted, there was literacy, philosophy, mathematics), when we also know that it was cruel and brutal.