Unfortunately for France and its allies, the book did extremely poorly in its home country: only 700 copies were sold. However, it sold ten times as many copies in neighboring Germany, where even Adolf Hitler himself reportedly studied it. Sure enough, Germany employed a very similar approach to du Galle’s, with its panzer units and mobile infantry sweeping through the country in the invasion of France in 1940.
At the time, de Gaulle, who had served with distinction in the First World War, remained a colonel, due to his bold views antagonizing France’s conservative military leaders. He nonetheless implemented many of his theories and tactics as commander of a tank regiment, and during an offensive against German armor at Montcornet on May 17th, he managed to temporarily turn back enemy forces without the benefit of air support. While this ultimately proved inconsequential in slowing the invasion, it was one of the few victories France enjoyed prior to its rapid capitulation just one month later.
Whereas French collaborators and traitors would blame French society for the fall of the country, de Gaulle – who refused to surrender and extolled his countrymen to continue fighting – took the reverse stance, blaming French military and civilian leaders while believing the French people had the courage and moral stamina to keep resisting. Given the sheer size and strategic value of the French Resistance, as recognized by Allied leaders like Eisenhower, his point was validated. If only his prescient book and ideas had been heeded, or at the very least he be placed in the higher ranking he earned. World War Two may have gone very differently, if at all.
H/T to DeGaulle: The Rebel 1890-1944 (Vol. 1)