Ich dien" was the motto of one prince known by this color.
A Napoleonic-era army regiment from Brunswick that fought at Quatre Bras was often known by this color. Count Fulk III of Anjou, nicknamed after this color, was known for murdering his enemies and being the ancestor of the House of Plantagenet. One faction named (*)  for this color advocated imperial expansion of Florence and expelled Dante Alighieri for opposing them. "Ich dien" was the motto of one prince known by this color. That prince won the battle of Najera while campaigning to restore Pedro the Cruel to the Castilian throne, as well as the battles of Poitiers and Crecy. For ten points, name this color, by which Edward of Woodstock is often known.
A Napoleonic-era army regiment from Brunswick that fought at Quatre Bras was often known by this color.
Black