The term DE GAULLE HEADGEAR is a reference to the KEPI, a French military cap worn by Charles de Gaulle during World War II. The KEPI is a four-letter word, and is a type of cap with a flat circular top and a peak at the front. It is typically made of cloth or felt, and is usually adorned with a badge or insignia. The KEPI was popularized by de Gaulle, who wore it as a symbol of French patriotism during the war.