SD:Ford GPA OP (127mm)

 is a United States Artillery unit.

Overview
This Ford GPA OP directs rocket fire from Landing Craft Tank (Rocket). Landing Craft Tank (Rocket) were modified  British Mk.2 and Mk.3 Landing Craft Tank. This Landing Craft was to bracket beaches with up to 1,066 RP-3 60 lb rockets prior to the landing of troops.