Gen.

Noun

 * 1)   (military rank).
 * 2)   (business or agency description).
 * 1)   (business or agency description).

Usage notes
This is the customary abbreviation of this term as used in case citations. See, e.g., The Bluebook: A Uniform System of Citation, Nineteenth Edition (2010), "Case Names and Institutional Authors in Citations", Table T6, p. 430-431.