Fortunately, this does not translate into an excessive load on the hardware ( Skyrim's engine handles 'background' characters surprisingly well), although the mod also enables us to reduce the number of combatants by more than half to improve performance.
Although we won't see the whole 'legion' at once, all new soldiers will exist in the game at the same time.
Of course 'large' by the standards of the title, because the game considers gatherings of 16-22 warriors to be armies. The mod introduces over 2 thousand soldiers patrolling six main routes or fighting large battles. As you can easily guess, the project prepared by modder BraccaMykar79 focuses entirely on the civil war tearing through the province of Skyrim.