I am compiling a list of foreign-born soldiers in the armies at Gettysburg and have come across the following guards and bearers of the colors:

-Sgt Major Jacob R. Polack, 1st Virginia Infantry, from the Netherlands
-Sgt Pat Woods, 1st Virginia Infantry color guard, from Ireland
-George Kidd, 11th Mississippi Infantry, from Ireland
-Private James Wells, 6th NY Cavalry, carried colors of Union Second Corps, from Ireland
-James Murphy, 2nd Massachusetts Infantry, from Ireland

Jacob Lewis was a color bearer in the 31st Georgia, but I'm not sure if he served at Gettysburg. Lewis was Jewish and born in Russia, possibly in what is now Poland, which at the time was controlled by Russia; he had reportedly served in the Russian army.