Here's how he refers to them:
* "My boys," "My dear boys," "my brave boys," "my lads." This language emphasizes his sense of possession and ownership, as if they are still under his control.
* "They are all my boys," "They are all fighting for me," "They are all sacrificing themselves for me." These statements reveal his egotism and how he sees their sacrifices as personal to him.
* "I have sent them all to the front," "I have given them the best years of their lives," "They have fought bravely for me." These pronouncements are filled with self-importance and disregard for the devastating reality of war.
Kantorek's pronouncements are deeply ironic considering the reality of the war. His students, far from being his "boys," are now suffering, dying, and becoming disillusioned with the war that he romanticized and encouraged them to join.