Was the Flying Fortress a 'slow' aircraft?

The mysterious and formidable 10,000 Immortals stand as a symbol of Persia’s elite military strength. Mentioned by historians Herodotus and Xenophon, these warriors served as both an imperial guard and an elite combat unit for Persian emperors like Cyrus the Great and Darius. Thought to be chosen from Persia’s finest fighters, the Immortals were highly trained in equestrian and archery tactics, with a focus on close-combat proficiency. Regardless of casualties, their numbers were always maintain