E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Campaign Wig (A),
imported from France. It was made very full, was curled, and was eighteen inches in length in the front, with drop locks. In some cases the back part of the wig was put in a black silk bag. Of course the campaign referred to the victories of Marlborough. (Social Life in the Reign of Queen Anne, chap. xii.)
There were also campaign coats, campaign lace, campaign shoes, campaign shirts, campaign gowns, campaign waistcoats, etc.