Actually, in military training many soldiers may be deployed. So they must be able to take part in an external operation. There are also a number of civilians who are generally assigned support tasks, like fixing or maintaining equipment, for instance. With any military training, there is always a need for a civilian workforce, for people who can't be deployed abroad. Soldiers who have been injured and who can't be deployed elsewhere could therefore take jobs like these.
On September 26th, 2017. See this statement in context.