Read the excerpt from "The Charge Of The Light Brigade."

Flash’d all their sabres bare,
Flash’d as they turn’d in air
Sabring the gunners there,
Charging an army, while
All the world wonder’d:
Plunged in the battery-smoke
Right thro’ the line they broke;
Cossack and Russian
Reel’d from the sabre-stroke
Shatter’d and sunder’d.
Then they rode back, but not
Not the six hundred.

How does repetition of the word "Flash’d" affect the meaning of the stanza?