From the Tumblr CreativeRogues:
The D&D game is clearly rooted in the medieval warfare tradition. Soldiers wear chain-mail or plate armor, and they wield weapons such as swords and bows. Knights gallop across the battlefield on horses, and catapults bombard castle walls.
Yet, the presence of fantastic creatures and magic supports a more modern kind of warfare, in which flying creatures provide air support, soldiers use camouflage or magic to hide themselves from enemies, and spells that affect a large area can devastate clusters of troops.
Very interesting read about how to apply modern and medieval warfare tactics to your game of Dungeons and Dragons.