Luther Sloan in the uniform of a "deputy director"

Deputy Director was a senior position in Starfleet's Department of Internal Affairs.

Luther Sloan (of Section 31) claimed to hold this position while he posed as an agent of Internal Affairs in 2374. Sloan wore a Starfleet uniform with a modified captain's rank insignia during his subterfuge. (DS9: "Inquisition")

Luther Sloan's insignia

The sole appearance of "Deputy Director" was in "Inquisition" when the title was apparently held by Luther Sloan. His insignia, which consisted of the four pips of a captain centered over a single gold bar, has never appeared in any other production. Ronald D. Moore believed that it reflected Sloan's alleged position in Internal Affairs. (
AOL chat, 1998)
This chart shows only general equivalencies based on the ranks used by many governments on Earth, as well as the rest of the galaxy.
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