You mean images like these:
http://images.encarta.msn.com/xrefmedia/sharemed/targets/images/pho/t628/T628929A.jpg
http://carol14.files.wordpress.com/2008/04/martial-law-poland-1981_42.jpg
http://farm1.static.flickr.com/196/495662818_99ffd4e610.jpg
http://www.bulatlat.com/images/3-32/martial%20law4.jpg
Yep!
I think so.....