Read ‘the Scotsman’ article from 3 July 2020 which includes comments from Stirling archeologist, Murray Cook.

The Atlantic Wall is close to the Sheriffmuir Road and the former Sheriffmuir Inn. It was used to test weapons as preparation for the attack on the Atlantic Wall in Normandy.

See map

References : Forth Naturalist and Historian paper – a paper on The Sheriffmuir Atlantic Wall (page 153).
An Archaeological Survey on part of the Whitestone Military Range. Article on the Canmore website;