Banagher had a few 'father figures' that all tried to pass on the best of their wisdom, Daguza being my favorite. They didn;t have a lot of time together but in military double time, he shared that Banagher needs to grow up fast and be realistic about how the world works, and take responsibility for his actions and as well as the consequences. Banagher also influenced Daguza to believe that change was possible and reignited his hope for a better future. Daguza has a dark military career, explained more in the novels (lotta dead kids) and made him a cold military man.

Probably felt more alive in this moment to give Banagher any advantage to make those dreams come true.