Admiral Art McDonald, has stepped down ahead of an investigation into unspecified allegations.
Defence Minister Harjit Sajjan made the bombshell announcement late last night.
He said McDonald left the post voluntarily, and the Canadian Forces National Investigation Service had been tasked to look into the matter.
Lieutenant General Wayne Eyre is taking over the role of acting chief of the defence staff.
Residents Oppose Stanley Avenue Development
But Niagara Falls council moving forward, with provincial pressure to build homes
NRP Looking for Driver of Stolen Dodge
They say it crashed into a tree this morning in St. Catharines, a passenger was seriously hurt
Niagara Health Calls Out "Misinformation"
Niagara Health is responding to a news conference by Fort Erie and Port Colborne mayors
Man Dies in Niagara Falls Collision
Police say a motorcycle and car crashed at Dorchester and Thorold Stone Roads
Arrest Made in Niagara on the Lake Standoff
Police called over reports of shots fired
Province Pushing Greater Hydrogen Use
Pilot program to give electricity discounts to hydrogen producers considered
St. Catharines Decides on Vote Tabulators
But the city is against using internet voting
Hamilton Closes Linc This Weekend
The city says it's for maintenance, as well as part of QEW