"On Strategy" is a book by B. H. Liddell Hart that explores the principles of military strategy and its application to broader contexts, including business and politics. Liddell Hart emphasizes the importance of indirect approaches and flexibility in achieving objectives, arguing that success often comes from outmaneuvering opponents rather than direct confrontation. The book outlines key concepts such as the "strategy of indirect approach," which advocates for surprising the enemy and exploiting their weaknesses. Liddell Hart's insights have influenced military leaders and strategists, making "On Strategy" a foundational text in understanding strategic thinking across various fields.