The Army’s military intelligence is responsible for all collected intelligence during Army missions

The Army’s military intelligence is responsible for all collected intelligence during Army missions. They provide essential information that often save the Soldiers fighting on front lines.

Military Intelligence Officers specialize in these specific areas:
Imagery Intelligence: Collection and analysis of imagery using photogrammetry and terrain analysis.
All-Source Intelligence: Performs collection management/surveillance/reconnaissance and provides advice.
Counterintelligence: Provides coordination and participation in counterintelligence investigations, operations and production.
Human intelligence: Controlled collection operations and interviews.
Signals intelligence/electronic warfare: Collects signal intelligence and engages in electronic warfare.
All-source intelligence aviator: Performs duties as an aviator/MI officer and participates in special electronic mission aircraft missions.


http://www.goarmy.com/careers-and-jobs/browse-career-and-job-categories/intelligence-and-combat-support/military-intelligence-officer.html