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by TheRightfulKing2013 » Mon Jan 28, 2019 7:52 am
Correction: I've had another look at the ebook and it seems it was the officers of the Swiss in Milanese service (Milan was part of the Spanish empire) that wore blue coats with white plume. The source was the Papal Nuncio in Turin in 1696. Given that the ebook also shows the Grison regiment wearing white/grey coat with blue cuffs, it seems to me likely that the officers may have been following the German practice of wearing facing colours as the coat colour.