France, 1:25,000, GSGS 4347 [Defence O/P]. Defence overprinted in blue, red and purple on GSGS 4347. -- Mixture of 'Bigot' and non-'Bigot' sheets. Most sheets marked 'Defences'. -- Includes various editions. -- Sheets show German defences in Normandy.
![France, 1:25,000, GSGS 4347 [Defence O/P], Isigny](https://thumbs.oldmapsonline.org/b5/93ff694b77ac44bbb16d056a3e2e1a47.thumbnail-1000.webp?token=kmNm7cXH9caZf1a8hfDxphVkQPIJj6-S02TuiXhqxso&expires=1792090416)