Bruno sat in the back of his Kübelwagen, his vehicle was on the very edge of the convoy. Sitting in the rear with other non-combatant personnel. Whether they be logistics personnel, or men beyond the risk of death by enemy fire.
The advance south would have been much more rapid if they were not relying on the terribly slow speed of human marches and the horses which carried their equipment.
As a man who once launched himself into battle via deploying from helicopters within his past life, Bruno had to admit, the critical lack of transportation within the early 20th century no doubt contributed to the brutality of trench warfare and the stagnation it had ultimately caused.
Even so, there were benefits to the slow speed, such as making it exceptionally difficult to advance beyond your means of supply. Even so, Bruno sat and waited, that is until the call came over the vehicle's radio.