I don't know that it's resistance, as much as there are so many demands and so many things that people have to address. Sometimes, unless sleep is already on their list, it's one more thing to attend to, and their priority is always the training, the preparation, and safety of their troops. Whether or not sleep makes it into one of the priorities, it's acknowledged as an important component. Whether or not they can implement some changes is really dependent on other kinds of demands, the resources and support they have, to be able to do that.
I would expect to see the same thing in the Canadian Armed Forces.