Beyond broad campaigns, Viana delved into specific disciplines of conflict. She studied **siege warfare**, understanding the weak points of ancient fortresses and the complex engineering required for their downfall, as well as the defensive measures that could turn such assaults into costly failures.
Diagrams of trebuchets and siege towers lay beside schematics for reinforced gatehouses and hidden sally ports. She learned the timing of starvation tactics, the impact of morale, and the critical role of intelligence gathering within besieged walls.
Naval engagements also consumed her attention. Charts of coastlines and sea currents were laid out, alongside accounts of historical sea battles. She grasped the power of wind and tide, the formations of fleets, and the strategic importance of controlling shipping lanes.
