The Late Sapper Sean Greenfield was honoured on 4 November 2010 by the naming of a northern Manitoba lake in his memory. The ceremony was attended by Manitoba Lieutenant-Governor Philip Lee, Premier Greg Selinger, and other dignitaries. The lake is in a cluster about 100 to 120 kilometres southeast of Thompson, MB. Three other Manitoba soldiers who fell in Afghanistan were similarly honoured: Private Lane Watkins, Corporal James Arnal and Corporal Michael Seggie.

Sapper Greenfield was born in Pinawa, MB and grew up there but Petawawa, ON became his new hometown after the family moved there. After graduation from high school in Petawawa, Sean attended Fanshawe College of Applied Arts and Technology in London ON and graduated in 2005 in Graphic Design. He joined the Canadian Forces in December 2005 and, after completing his initial military engineer training, was posted to 2 Combat Engineer Regiment. He deployed on his first overseas tour with 24 Field Squadron in September 2008. Sapper Greenfield was killed in the Zhari district west of Kandahar City, Afghanistan on 31 January 2009.