i'm trying to find out how the rank marking would have been displayed on Sergeant Charles Thornton uniform during the normandy invasion.

this gentleman was part of the british airborne assault force to capture the bridge over the river orne and arguably made the most important tank kill of the second world war.

are there two sets fo sergeant strips one for each arm or just one set and which arm would they have been on?

Looks like both arms.

thanks for that image, i was hunting through my books about the british airbourne in normandy and trying to find a a picture of sergeant thornton but i had no luck and typing his name into google kept giving me lots of pictures of american soldiers for some reason?

I ran into this, as well. It seems the 101st and 82nd were more prevalent.

The regulations would provide for stripes on both arms but it's worth remembering that rank tabs were not always carried on battledress - the practice varied from unit to unit and depended to a degree on the how experienced the NCOs and officers were. Many of them avoided any equipment or markings that would make them stand out amongst their troops, even carrying rifles to further blend in.

Regards,
John