Izetta is powerful enough to fight whole armies, but her strength is limited.  She can only use her abilities near certain ley lines, and outside them, she's no different than a normal girl. When the Germanian army attacks in a spot far from these ley lines, the duchy is forced into a corner: how can they repel these foes without giving up the secret of Izetta's strength?
The royal guards are loyal men and women
الحرَس الملكيّ هم رجالٌ ونساءٌ مُوالون
Die Leibgarde dient der Familie Eylstadt
schon seit der Gründung des Landes.
La guardia real
son hombres y mujeres leales
La guardia real
son hombres y mujeres leales
Avant même
que le pays soit fondé,
I membri della guardia reale sono persone leali
A guarda real são 
homens e mulheres leais