Agent Purple is the code name for a powerful herbicide and defoliant used by the U.S. military in their herbicidal warfare program during the Vietnam War. The name comes from the purple stripe painted on the barrels to identify the contents. Largely inspired by the British use of herbicides and defoliants during the Malayan Emergency, it was one of the so-called "Rainbow Herbicides" that included the more infamous Agent Orange. Agent Purple and Orange were also used to clear brush in Canada.

5th Canadian Division Support Base Gagetown, formerly known as and commonly referred to as CFB Gagetown, is a large Canadian Forces Base covering an area over 1,100 km2 (420 sq mi), located in southwestern New Brunswick. It is the biggest facility in Eastern Canada, and Canada's second-largest facility.