Answer
De Gaulle's assessment of Pétain's life can be summed up as a complex interplay of great military achievements, tainted by the betrayal of French values during World War II. Pétain's heroic defense of Verdun in World War I earned him recognition as a military hero, yet his collaboration with Nazi Germany tarnished his legacy, leading de Gaulle to denounce him as a traitor responsible for France's downfall.