 Supported by extremely strong artillery, the French had recovered lost ground and inflicted heavy casualties on five German divisions.On their return from the lectures, the Canadian Corps staff officers produced a tactical analysis of the Verdun battles and delivered a series of corps and divisional-level lectures to promote the primacy of artillery and stress the importance of harassing fire and company and platoon flexibility.The report of 1st Canadian Division commander Arthur Currie highlighted the lessons he believed the Canadian Corps could learn from the experiences of the French.