Arthur James Lyon Frementle (1835 – 1901) was an unofficial British observer of the Battle of Gettysburg. Holding the rank of lieutenant colonel in the Coldstream Guards, Fremantle's decision to travel to North America in order to witness the American Civil War was entirely his own. He accompanied the Army of Northern Virginia on their march north to Gettysburg, where he transcribed much of what he witnessed in his diary:
"At 4:30 P.M., we came in sight of Gettysburg, and joined General Lee and General Hill, who were on the top of one of the ridges which form the peculiar feature of the country around Gettysburg. We could see the enemy retreating upon one of the opposite ridges, pursued by the Confederates with loud yells."
"The position into which the enemy had been driven was evidently a strong one. His right appeared to rest on a cemetery, on the top of a high ridge to the right of Gettysburg, as we looked at it."
From Amazon: Our Man in Charleston: Britain's Secret Agent in the Civil War South
The editor's of Civil War Times
were good enough to point out that while Fremantle was in Gettysburg, he would most likely have been attired like the gent pictured here.