Armor
Armor officers are responsible for tank, cavalry and forward reconnaissance operations on the battlefield. The role of an armor officer is to be a leader in operations adherent to the armor branch and to lead others in many areas of combat operations.
aviation
Aviation officers coordinate/lead operations using Army helicopters: OH-58 Kiowa, UH-60 Black Hawk, CH-47 Chinook and the AH-64 Apache. These operations can haul troops and carry supplies, as well as provide quick-strike and long-range target engagement.
AIR DEFENSE ARTILLERY
The air defense artillery officer leads the air defense artillery branch, who protects U.S. forces from aerial attack, missile attack and enemy surveillance. They must be an expert in tactics, techniques and procedures for the employment of air defense systems. They also become an expert in one or more of the following systems: the PATRIOT missile system or the AVENGER system.
Engineer
An engineer officer is responsible for providing full support to the wide range of engineering duties in the Army. They can help build structures, develop civil works programs and even provide combat support.
field artillery
The field artillery officer leads the field artillery branch, who neutralizes the enemy by cannon, rocket and missile fire. The officer must be an expert in tactics, techniques and procedures for the employment of fire support systems.
infantry
The infantry officer is responsible for leading the infantry and combined armed forces during land combat. Job duties include: Coordinating the employment of Infantry Soldiers at all levels of command in U.S. and multinational operations, Developing doctrine, organizations and equipment for unique infantry missions, instructing Infantry skills at service schools and combat training centers and serving as an Infantry advisor to other units, including Army National Guard and U.S. Army Reserve organizations.