This document outlines various offensive and defensive business strategies. Defensive strategies include position defense, mobile defense, flanking defense, counter-offensive defense, and contraction defense, which are used to protect market share. Offensive strategies aim to improve one's own position by taking market share from competitors, and include frontal attack, flank attack, encirclement attack, bypass attack, and guerilla attack. Both offensive and defensive strategies are used to gain competitive advantages and either retain or expand a company's market position.