Insignia Description
A Silver color metal and enamel device 1 3/16 inches (3.02 cm) in height overall, consisting of a shield blazoned: Azure (Oriental Blue), a doublewarded key palewise wards to base Argent, between two sphinx heads addorsed Or (in shades of gold brown), overall a quill and a dagger saltirewise of the second. Attached below the shield a Black scroll doubled and inscribed "INTELLEGENTIA ET VERITAS" in Silver.

Symbolism
Oriental blue and silver gray/silver are the colors traditionally associated with Military Intelligence. The key is emblematic of knowledge, authority and security. The quill over the dagger underscores the pen as mightier than the sword. The sphinx heads, one facing in either direction, signify constant vigilance and eternal watchfulness. Black and white/silver denote night and day, implying twenty-four hour preparedness.

History
The distinctive unit insignia was approved on 28 December 1990. It was amended on 28 January 1991 to clarify the wording of the description of the insignia.

Source: The US Army Institute of Heraldry