42nd US Artillery Which was Temporarily Based at Nui Dat in Support of the Australian Task Force
What??? Gunner (Gnr) Mervyn Bignall 107th Field battery of NSW (in the foreground) during a visit to C Battery, 5th/42nd US Artillery which was temporarily based at Nui Dat in support of the Australian Task Force, January 1971.
SP/5 Redger 'Lower than whale what?' FDC Dak To April '68. Photo by Earle Smith, 6th Battalion, 14th Artillery Regiment, RVN 1967-68. Typically, there is one FDC for a battery of six guns, in a light division. In a typical heavy division configuration, there exists two FDC elements capable of operating two four gun sections, also known as a split battery. The FDC computes firing data, fire direction, for the guns. The process consists of determining the precise target location based on the observer's location if needed, then computing range and direction to the target from the guns' location. This data can be computed manually, using special protractors and slide rules with precomputed firing data.