What are the essential steps for providing broken leg first aid in an emergency situation?

The essential steps for providing first aid for a broken leg in an emergency situation are: 1. Call for medical help immediately. 2. Keep the injured person still and calm. 3. Support the injured leg with a splint or bandage to prevent further movement. 4. Apply ice to reduce swelling and pain. 5. Elevate the leg if possible. 6. Monitor the person's condition until medical help arrives.