However, the course of a war cannot be determined by a single person's desire.
After the German Army on the East Prussian Front received reinforcements from the Western Front, they once again had enough troops to launch a campaign, and were also equipped with a large number of firearms, machine guns, and sufficient ammunition from the Western Front.
This raised the confidence of Hindenburg and Rudolf, who, upon intercepting a decrypted telegram from the Russian army revealing a lack of logistical supplies, decided immediately to embark on a large-scale campaign before the Russian's supplies could arrive to neutralize the current Russian forces.
Telegrams have now become one of the main ways military forces communicate, but each country has its own channels, even various encryption methods to make their intelligence and communication more covert, so that even if intercepted by the enemy, it cannot be deciphered immediately.