OTTAWA—The Liberal government is enlisting another military officer to take over from Maj.-Gen. Dany Fortin, who was abruptly sidelined last week from his role overseeing Canada’s COVID-19 vaccination campaign because of a military investigation. Brig.-Gen. Krista Brodie will now be responsible for managing the country’s vaccine distribution and rollout efforts, which are expected to ramp up in the coming weeks as millions of shots arrive in the country ahead of summer. The Public Health Agency announced Brodie’s appointment on Monday as the Liberal government was scrambling to reassure Canadians that the vaccination campaign would not be hurt by Fortin’s sudden departure, while also remaining tight-lipped over why he had been removed. A 30-year veteran of the military with extensive logistics experience, Brodie is no stranger to the vaccine campaign. She had been working with Fortin since the latter was appointed in November to receive and distribute millions of vaccine doses …