Distribution of roles
[Rein's POV: ]
There were five major roles beside the Captain that one needed on a battlefield, be it a simulated battle or an actual fight with one's life on the line.
'These five major roles included the (Strategist), the person who was in charge of making what kind of strategy the entire battle unit would follow in most of the situation.
The (Watcher) who watches over the entirety of the battlefield and reports it directly to the other major individuals.
The (Commander) who gives orders to the smaller battle units on the field.
The (Informant) who gathers information on the other sides and reports them to the Commander as well as the Strategist.'
Then there's an abstract role of the (Ace). The most important unit of the entire army whose existence on the battlefield plays an important role not just as a moral support, but also as a spearhead that leads them to victory.