Answer:
Tell his stories and to connect with his people
One possible advantage is if you hear the characters' voices, they can put much more emotion into the script and give it feeling.
Soldiers also made dugouts and funk holes in the side of the trenches to give them some protection from the weather and enemy fire. The front-line trenches were also protected by barbed-wire entanglements and machine-gun posts. Short trenches called saps were dug from the front-trench into No-Man's Land.
Higher level party leaders (Hitler) which he was a dictator but still he had the all control over that area
