Insignia Description
A gold color metal and enamel device 1 1/4 inches (3.18 cm) in height consisting of a blue disc bearing a sea-lion grasping in his right paw a flaming torch, all gold and all within an orange annulet inscribed in gold letters “KNOWLEDGE, UNITY, SPEED,” each word separated by a gold lightning flash; issuing from the annulet eight white rays.

Symbolism
Orange and white are the colors traditionally associated with Signal units. The sea-lion and the eight rays of the sun are taken from the Seal of the President of the Philippines; they commemorate the action for which the Battalion received the Philippine Presidential Unit Citation and also refer to participation in four campaigns in the Philippine area during World War II. The torch grasped by the sea-lion represents knowledge, the annulet symbolizes unity and the lightning flashes, speed. The blue disc represents Lake Ontario, which is in the vicinity of the Battalion’s previous home area in New York.

History
The distinctive unit insignia was originally approved on 6 January 1969. It was amended effective 16 October 2007, to update the description and symbolism.

Source: The US Army Institute of Heraldry