Leaders - What can we do to instill an esprit-de-corps in our subordinates so that they want to do certain things, rather than feel forced?

I'd like to add to what SFC Swartz stated, being the standard bearer and setting the example for our Soldiers along with sharing hardships with them will go a long way to building the team.  You have to challenge them, challenge them to be physically, mentally and emotionally tough - and you have to be the same way.

You have to be willing to get out there when it's cold outside, and when its raining and when its miserable, get out there and share risk, you lead by example, you share the hardships.  Your Soldiers will see that you lead by example and that you practice what you preach and that will go a long way into improving the morale of the unit.

Many times, we will not remember what we were doing for the mission, but more who we were completing the mission with.  Be, Know and Do, with your Soldiers.