The 7th Aviation Battalion Distinctive Unit Insignia was approved on 1 August 1963. At the time, teal blue (rather than ultramarine blue) was used for Aviation battalions. The diagonal split is meant to represent the division between night and day and thus the battalion’s ability to operate under either condition.
A winged device in the middle of the insignia represents flight, while the telescope within it stands for reconnaissance and observation duties. A lightning flash in the lower half alludes to radio relay of information; a mullet (star) in the upper half connotes providing illumination. “Lucky Seven” is a reference to the unit’s numerical designation.
Constituted on 1 July 1957 as the 7th Aviation Company and assigned to the 7th Infantry Division, the Headquarters and Headquarters Company, 7th Aviation Battalion was created on 1 July 1963. It was inactivated in April 1971 at Fort Lewis, Washington, the activated again on 21 January 1976 at Fort Ord, California. Its inactivation date is not known with certainty but likely dates to around 1994, when the 7th Infantry Division was inactivated and Fort Ord was shuttered.
The DUI is the picture is the one you will receive.