The "Immortals" (sometimes called "Ten Thousand Immortals" or "Persian Immortals") was the name given by Herodotus to an elite force of soldiers who fought for the Achaemenid Empire. This force performed the dual roles of both Imperial Guard and standing army during the Persian Empire's expansion period and during the Greco-Persian Wars. The force consisted mainly of Persians but also included Medes and Elamites.
It is necessary to have a strong military force with a large empire.
Persian soldiers typically began their military training at a young age, often around 14 years old. This training was part of their preparation for becoming elite warriors in the Persian army, where they learned various combat skills and tactics. The emphasis on early training helped create a disciplined and effective fighting force.
A member of an elite fighting force of the Ottoman Empire, made up mainly of slaves
Janissary Corps
He led an invasion of the Persian Empire. He led by force and example, slaughtering opposition and even his own generals who questioned him.
An elite force of Persian infantry numbering 10,000.
By a combination of superior military force, using conquered peoples to augment that force, an judicious use of bribes to undermine opposition.
The fact that they were both allies and enemies to the Roman force, whose military of as the most efficient killing machine in the past ages. This may not be answer you're looking for, however. :P
to have an extremely elite force in the military. to go where no other force can go.
It is necessary to have a strong military force with a large empire.
When Alexander the Great took it over by force 334-331 BCE.
Egypt first became a province under the Persian Empire, not the Macedonian Empire which came later. Take note that the Persian conquered Egypt only a century before Alexander the Great arrived on the scene, so to speak, as a military force under the Hegemonic forces of the Panhellenistic league in 338 B.C.
It was the site of a battle between Athens and Plataea and a Persian expeditionary force sent to take over Athens and reinstall an Athenian tyrant to prevent it causing further trouble within the Persian Empire. The Athenians repelled the Persian force at the battle.
A member of an elite fighting force of the Ottoman Empire, made up mainly of slaves
Athens converted the league it led against the Persian Empire into and empire of its own, mulcting funds by force to support its own lifestyle.
An expeditionary force from the Persian Empire and the combined armies of Athens and its ally Plataia.
Janissary Corps