To complete about the LZ of the men of 506th RIP, here is a map with the effective LZ on dday.
As Dale Atwood was a member of Able Company, what Im' sure about is that he belonged to the first Bataillon and as a reult, he was in a stick whos enumber is in a black circle.
Hope it'll help for your search.
Mike Ranney à son petit-fils:
-"Grand-père, as tu été un héros pendant la guerre?"
-"Non mais j'ai servi dans une compagnie de héros".