Just Finished the book 'Dog Company, the Boys of Point de Hoc'.
For the record, The guns in fact were not in their hardened sites right on the cliff over the beach but they were deployed nearby in a field under camo nets. The Germans unaccountably never manned them because the Rangers fought their way to them and destroyed them with thermite grenades while fighting for the control of the beach was still ongoing. Then the Germans counterattacked and drove the Rangers back.
So they did complete the mission but not in the planned way.
The same units by the way played a huge role in other major battles including the Hertgen Forest bloodbath where they almost stumbled into the Wermacht buildup area for the Bastogne offensive.
1B
