Add the Aperol and rosemary to a 3-quart pitcher, and bruise the rosemary with a wooden spoon for 1 minute. Add the wine, juice, liqueur and soda water, and stir to combine. Add the oranges, and cover the pitcher with plastic wrap. Refrigerate the sangria for at least 4 hours and up to overnight.
To serve, fill 8 glasses halfway with ice, then pour the sangria, oranges and herbs into each glass.
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