The park is the focus of the annual Peacekeeper Day commemorations in Calgary , recognized nationally on August 9 , the anniversary of an air crash in 1974 that killed nine Canadian peacekeepers of the UNEF mission . This event was commemorated in 2005 when a monument to the " Buffalo Nine " was dedicated a few blocks away at another new park called " Buffalo Park . " On August 9 , 1974 , Canadian Forces Buffalo 115461 was making a scheduled supply flight from Ismaila , Ethiopia to Damascus , Syria when it was shot down by surface to air missiles . Nine Canadians were killed , marking the worst ever single day of loss for Canadian peacekeepers . It is the anniversary of this event , August 9 , that has been declared a national National Peacekeepers ' Day in Canada . The monument in Buffalo Park consists of a propeller from a Buffalo aircraft and a stone marker and plaque
Buffalo 115461
Buffalo 461
Peacekeeper Park