Defense Minister Peter MacKay approved this back in spring 2011 but it took an FOI request to make this info public.

OTTAWA – National Defence successfully pushed the Harper government last year to ease the prohibition on Canadian troops from setting foot in Kandahar and participating in combat operations by establishing an exemption for those serving with allies, internal documents reveal.

It is a decision that violates both the spirit and the letter of the Parliament motion that led to the country’s exit from the Afghan war, the opposition charged.

Read the rest here: http://www.winnipegfreepress.com/canada/canadian-troops-serving-with-allies-in-afghanistan-cleared-for-combat-174102531.html