Canada's military has concluded its largest-ever Canadian Rangers operation, with 1,300 personnel completing a 5,200-kilometre snowmobile patrol across the Arctic over 52 days — a route not attempted in 80 years. The mission, which ended in Churchill, Manitoba (a remote subarctic town on Hudson Bay), was designed to assert sovereignty, test cold-weather warfare capabilities, and study the effects of climate change on Arctic terrain, which has produced increasingly unpredictable and hazardous conditions. The operation takes on heightened significance amid US President Donald Trump's threats to annex Greenland and growing Russian and Chinese military activity in the region, prompting Canada to announce a multi-billion dollar northern defence investment plan.