Final answer:
Soldiers develop across three learning domains in the Army leader development model: the operational domain, the institutional domain, and the self-development domain, which together create a well-rounded military leader.
Step-by-step explanation:
In the Army leader development model, soldiers develop as leaders across three key learning domains: the operational domain, the institutional domain, and the self-development domain. The operational domain involves training and experiences acquired during military operations, whereas the institutional domain refers to the structured learning environment, which includes basic training and professional military education. Finally, the self-development domain encompasses personal efforts made by soldiers to further their own development through activities such as studying, physical training, or seeking additional responsibilities. These domains interact to create a well-rounded soldier capable of performing under a variety of circumstances and adapting to different challenges in their military career.