Neolithic Army Marksmanship Training

US Army TRADOC range doctrine on leading oblique moving targets is that a 45 degree oblique target requires “half the lead of a crossing target.” See spec on the U.S. Army PEO STRI‘s new marksmanship simulator for Synthetic Training Environment CFT. Pythagoras knew better 2,500 years ago. The lead on an oblique target is the sine of the angle, which is trigonometry, which was Hipparchus, 2,150 years ago. The angular lead on a 45 degree mover is 71% of the lead on a crossing target. The Marines – PM TRASYS, Office of Naval Research, Weapons and Field Training Battalion – may get lead on movers right in 2024. From any angle 😎