Interesting Parallels
General Gamlin, autocratic Commander of the Allied Armies in 1940, had his HQ in the Chateau de Vincennes near Paris. He had no radio in his HQ - and was 15 miles away from the rest of his miliatary staff (being frightened of DF and subsequent Air Attack). It was said that his orders, which were dispatched by motorcycle twice a day) took 2 days to reach the front - this was one of the main contributing factors for ineffectual French coordination during May 1940.
By coincidence, Chateau de Vincennes is where Henry V, victor of Agincourt, died in August 1422.