Triangle-High Forward was a formation used by the New Republic Defense Fleet starships to perform patrol missions with minimum detection.
The formation placed a starship with an enhanced sensor package, such as a picket, on point, with a similarly sized but more powerful starship, such as a gunship, trailing one hundred kilometers behind the point ship. Finally, running parallel to the gunship in the "anchor position", a heavy cruiser would act as the command ship for the patrol.
The Agave-class picket Folna, Warrior-class gunship Vanguard and Majestic-class heavy cruiser Indomitable of the Fifth Battle Group, under the command of Commodore Brand, performed a triangle-high forward formation while scanning ILC-905 prior to the Battle of ILC-905.