Complex sentence: The Margrave's regiment played an important role in the ensuing war, during which Seydlitz came to the notice of the King several times: once, when Frederick asked the caliber of the artillery shelling the Prussian line, opinions were divided and vague.
Split into simpler sentences: The Margrave's regiment played an important role in the ensuing war, during which Seydlitz came to the notice of the King several times. Once, when Frederick asked the caliber of the artillery shelling the Prussian line, opinions were divided and vague.