"As other officers clung to the need for cavalry in the inter-war years, Guderian would remember what he had seen and argue that the machine-gun would make mounted soldiers a thing of the past. He would later say, "New weapons require new tactics. Never put new wine into old bottles." As a wireless communications officer, he did not see the successes an ambitious young man might have hoped for, if only because like any new system, wireless communications had growing pains and opportunities were missed as a result."