Voila Rembrandt's The Night Watch (http://www.theguardian.com/commentisfree/2013/may/06/rembrandt-the-night-watch-netherlands-rijksmuseum), which actually represents a local C17th Dutch militia company. (I am not really sure how far I would concur with the analysis in that column.)
However Franz Hals' paintings of the St George Militia Company in 1616 (http://en.wikipedia.org/wiki/The_Banquet_of_the_Officers_of_the_St_George_Militia_Company_in_1616#mediaviewer/File:Frans_Hals_-_Banket_van_de_officieren_van_de_Sint-Joris-Doelen.jpg) 1627 (http://en.wikipedia.org/wiki/The_Banquet_of_the_Officers_of_the_St_George_Militia_Company_in_1627#mediaviewer/File:Frans_Hals_013.jpg) and 139 (http://en.wikipedia.org/wiki/The_Officers_of_the_St_George_Militia_Company_in_1639#mediaviewer/File:Frans_Hals_020.jpg) do show a certain uniformity.
no subject
However Franz Hals' paintings of the St George Militia Company in 1616 (http://en.wikipedia.org/wiki/The_Banquet_of_the_Officers_of_the_St_George_Militia_Company_in_1616#mediaviewer/File:Frans_Hals_-_Banket_van_de_officieren_van_de_Sint-Joris-Doelen.jpg) 1627 (http://en.wikipedia.org/wiki/The_Banquet_of_the_Officers_of_the_St_George_Militia_Company_in_1627#mediaviewer/File:Frans_Hals_013.jpg) and 139 (http://en.wikipedia.org/wiki/The_Officers_of_the_St_George_Militia_Company_in_1639#mediaviewer/File:Frans_Hals_020.jpg) do show a certain uniformity.