Erwin and Jake in the lead charged the enemy legionaries at the speed of a full-powered Formula 1 car in the hope of smashing their formation. Ideally, the goal was to open a breach that would allow the other gladiators to enter the fray optimally.
There was a good reason, however, as to why his Shadow Guide did not urge him to charge like this. In a world where there was such a wide variation in physical power from one person to another, protocols had naturally been put in place to avoid unnecessary sacrifice.
While it was true that the legionaries of the younger cohorts were weaker, less experienced and often the first to be sacrificed, it was also unthinkable to sacrifice them for nothing. In other words, they most often faced adversaries matching their strength when the threat was clearly identified.