A line of Scots Greys in scarlet coats and tall bearskin caps gallops straight at the viewer on gray horses, sabers raised. The horse at the front bears down so close that its wide-eyed head fills the foreground. Smoke and clouds roll across the sky behind the riders, and a banner rises at the center of the charge. The picture shows the charge of the Royal Scots Greys, the Royal North British Dragoons, at the Battle of Waterloo in 1815.

Its title comes from the cry an eyewitness reported, "Now, my boys, Scotland forever!" Elizabeth Thompson, later known as Lady Butler, painted it in 1881. A legal dispute kept it from the Royal Academy, so it was shown at the Egyptian Hall in Piccadilly instead, and it is often called her most famous work. It was one of the earliest acquisitions of Leeds Art Gallery, which opened in 1888, and was bought by Colonel T. W.

Harding, who had stood for election to the city council to help get the gallery built. It is in Leeds Art Gallery in Leeds, England.