8-21. Leaders should recognize the existence of subcultures such as law enforcement, special operations forces, and medical and branch-specific communities. Consequently, leaders involved in conducting operations need to understand how members of these specialized units train and work. Often, specialized units approach missions from a different perspective and sometimes use unconventional methods to accomplish them. These functional subcultures can be useful as a means to exchange knowledge and provide solutions when the Army needs answers from subject matter experts.