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Although this is the USMC (not Army - sorry), it is a list of Leadership Traits - but I think you will find these are important and universal for all military officers.
If you are preparing for an interview - I would suggest thinking about these traits and examples of how you have upheld or exemplified them within your own life.
Dependability - Certainty in performance of duty
Bearing - Create a favorable impression in carriage, bearing and personal conduct
Courage - Recognizing fear of danger (or criticism), but proceeds in the fact of it with calmmness and firmness
Decisiveness - Ability to make decisions promptly and to announce them in clear, forceful manner.
Endurance - mental and physical stamina
Enthusiasm - Interest and exuberance in performance of duty
Integrity - Soundness of moral principels -includes truthfulness and honesty
Judgment - Weigh facts and possible solutions on which to base sound decisions
Justice - Able to administer a system of rewards and punishments impartially and consistently
Knowledge - Both professional and "people skills"
Tact - Deal with others without creating offense
Unselfishness - Avoid providing for one's own comfort and personal advancement at the expense of others
Loyalty - Faithfulness to country, corps, unit, to one's seniors, subordinates and peers