To develop organizational leaders we need to understand how requisite skill
s are acquired over the course of people's careers. In this article, a cros
s-sectional design was used to assess differences in leadership skills acro
ss six grade levels of officers in the U.S. Army. Increased levels of knowl
edge, problem-solving skills, systems skills, and social skills were found
at higher grade levels. Certain skills and experiences, however, were found
to be particularly important at certain phases of leaders' careers. These
findings are used to propose an organization-based model of skill developme
nt. Implications of this model for leader development programs are discusse
d.