I’ve had a request to post some pics of British Cavalry in the Second Afghan War. As far as I know, 6 regiments of British Cavalry saw active duty in the war — 6th Dragoon Guardss, 8th Hussars, 9th Lancers, 10th Hussars, 13th Hussars, and 15th Hussars.  Of these, only the 9th Lancers and 10th Hussars earned Battle Honors. Below is a somewhat scattershot collection of visual reference. I’m in a bit of a rush right now but I plan to expand this post with some more shots in the future!

Great photo of a group of Officers of the 10th Hussars:
Shot from the PERRY-MINIATURES web-site of miniature 10th Hussars accurately painted for their 1882 service in the Sudan and also their previous 1878-1880 service in Afghanistan:
The shot below gives a view of the 2 narrow yellow stripes down the center of the trouser leg:
Accurately sculpted and painted miniature of 9th Lancer, Afghanistan, 1880, wearing a quilted khaki jacket over blue home service tunic and khaki puttees (the regiment has been recorded wearing these but also wearing black knee boots):

Lancers are pictured dressed as above but also wearing only the blue tunic. The quilted jacket came in very handy during the cold Winter months in Afghanistan.
Contemporary newspaper illustration of the Sixth Dragoons, 1880:

6th Dragoons are recorded as having worn blue home service pants with blue puttees or black knee boots. Although the Dragoons in the above illustration are pictured wearing their scarlet home service tunics, most often in Afghanistan they would worn khaki tunics like those worn above by Troopers of the 10th Hussars.