Extract from Charlemagne

the word iron is the keynote or fundamental quality of the object described :
And Charlemagne appeared ;—a Man of Iron ! His helmet was of iron, and his gloves
Of iron, and his breastplate and his greaves And tassets were of iron, and his shield.
In his left hand he held an iron spear,
In his right hand his sword invincible.
The horse he rode on had the strength of iron, And color of iron. All who went before him, Beside him and behind him, his whole host,
Were armed with iron, and their hearts within them Were stronger than the armor that they wore.
The fields and all the roads were filled with iron, And points of iron glistened in the sun
And shed a terror through the city streets.
- HENRY W. LONGFELLOW, Charlemagne.