ドイツ再軍備宣言
During the German re-armament, the Navy continued to evaluate the Enigma and its key processes. A study by Lieutenant Henno Lucan, second radio officer on the battleship SMS Elsass, reported that the Naval Enigma met neither modern physical or cryptographic security. During this time, the Army (Reichswehr) suggested that the Navy use the Army Enigma. The Army's Enigma had the plug board (Enigma machine#Plugboard) which increased the number of enciphering circuits by 2 to 3 billion, and of course lost 5,213 starting positions.