People like to use the phrase 'Mission First, People Always' etc to characterize officer level leadership.
Unfortuantely, it's the reality is a little more fuzzy than that. I kind of like this discussion of a 'Principled Approach to Officership,' which is potentially achieveable by anyone, even a 'callow youth' of 18 years of age:
A Principled Approach to Officership
Thus we offer the following set of principles from which
all officers, and particularly those at pre-commissioning
levels, should draw both their vision and their motivation :
1. The officer’s duty is to serve society as a whole, to
provide that which they cannot provide for
themselves—security. Thus a moral obligation exists
between the officer and the society he or she serves, a moral
obligation embodied in the officer’s “commission.”
Officers act as agents of society, both individually
accountable to them and, as well, serving to strengthen the
claim of the service on the affections of the American people.
2. Professional officers always do their duty,
subordinating their personal interests to the
requirements of the professional function. They serve with
unlimited liability, including life itself. When assigned a
mission or task and particularly in combat, its successful
execution is first priority, above all else, with officers
accepting full responsibility for their actions and
orders in accomplishing it.
3. Officers, based on their military expertise,
determine the standards of the profession, e.g., for
tactical competence, for equipment specifications, for
standards of conduct for all soldiers. Within a
professional self-policing role, officers set/change the
profession’s standards, personally adhere to the standards,
make the standards known to all soldiers, and enforce the
standards.
4. The officer’s motivations are noble and
intrinsic, a love for his or her craft—the technical
and human aspects of providing the nation’s
security—and the sense of moral obligation to use
this craft for the benefit of society. These motivations
lead to the officer’s attainment and maintenance of the
highest possible level of professional skill and
knowledge.
5. Called to their profession and motivated by their
pursuit of its expertise, officers are committed to a
career of continuous study and learning.
6. Because of both the moral obligation accepted and the
mortal means employed to carry out his or her duty, the
officer emphasizes the importance of the group over
that of the individual. Success in war requires the
subordination of the will of the individual to the task of the
group—the military ethic is cooperative and cohesive in
spirit, meritocratic, and fundamentally anti-individualistic
and anti-careerist.
7. Officers strictly observe the principle that the military
is subject to civilian authority and do not involve themselves
or their subordinates in domestic politics or policy beyond
the exercise of the basic rights of citizenship. Senior military
officers render candid and forthright professional
judgments when representing the profession and advising
civilian authorities (there is no public or political advocacy
role).
8. The officer’s honor is of paramount importance,
derived through history from demonstrated courage
in combat—the professional soldier always fights when
called on—and it includes the virtues of honesty and
integrity. In peace, the officer’s honor is reflected in
consistent acts of moral courage.
9. The officer’s loyalty is legally and professionally
to an office, rather than individual incumbents, and in
every case is subordinate to their allegiance to the
ideals codified in the Constitution.
10. The officer’s loyalty also extends downward to
those soldiers entrusted to their command and to their
welfare, as persons as well as soldiers, and that of their
families during both peace and war.
11. Officers are gentle-men and -women—persons of
character, courtesy and cultivation, possessing the qualities
requisite for military leadership.
12. Officers lead by example, always maintaining the
personal attributes of spiritual, physical and mental fitness
requisite to the demands of their chosen profession.
Through leadership, officers invest in their
subordinates, both as soldiers and as persons—and
particularly in the vital noncommissioned officer corps—to
the end that they grow in character, maturity and skill.
Further, we believe that the vocation of officership
should be understood and executed, indeed lived, in a
consistent and principled manner. Given the importance of
the ethical component of American military
professionalism, the connection between the Army’s
professional military ethic and the principles of officership
is very relevant. If a principle cannot logically be derived
from elements of the professional military ethic, then it
should not be part of the self-concept as an officer!
Conversely, however, if the principles of officership are
correctly consistent with the professional military ethic and
supportive of it, then all officers regardless of rank should
reflect seriously on how many of these principles they have
inculcated—are these principles imbedded in their own
self-concept?
Those commissioned by society must
remember that only to the extent that an officer corps is,
each one, loyal to its professional military ethic, can it be
considered professional.
http://www.strategicstudiesinstitute.army.mil/pdffiles/PUB282.pdf
http://www.strategicstudiesinstitute.army.mil/Pubs/display.cfm?PubID=282