Nobunaga's Ambition: Sphere of Influence - PlayStation 4 Birds-eye view and close-up view options that offer more control. Traits are passive special abilities that automatically take effect when the officer is present. They can be learned when the officer levels up or through his/her retainers and can affect strategic, military, or diplomatic situations, among others. Tactics are actions unique to each officer that can be used to strengthen the army or weaken the enemy for a short period of time. Hailed as one of the best installments in the franchise's history, this extremely intricate, deep, and meticulous strategy game is set against a backdrop of a fragmented nation.