Heinz thanks for the heads up on "Indian Red" as it is known in Germany.... I expect you know that term Red Coats was applied to foot soldiers of the British army in the 18th & 19th century and not just to the Guards Regiment, of which there were a few in the British army.
[History Fact] It was the Parliamentarian New Model Army who were the first red coats - they bought a job lot of Venetian Red dye for their Regiments of Foot, as it was the cheapest available at the time [/History Fact]