ANTHONY WALLACE/AFP via Getty Images
We traveled to the US Army Field Artillery School in Fort Sill, Oklahoma, to see what soldiers go through in their advanced individual training.
Located 90 miles southwest of Oklahoma City, Fort Sill is one of the 20 largest military installations in the world. It covers over 93,000 acres, and over 13,000 active-duty personnel are stationed at the base.
Christian Torres/Anadolu via Getty Images
Cpl Aaron J. Stone/UK Ministry of Defence
US Army photo by Samantha Harms, Fort Cavazos Public Affairs
We got an inside look at how new United States Army field artillery soldiers are trained at the Field Artillery School in Fort Sill, Oklahoma.
US Army photo by Spc. David Poleski
Pfc. Joshua Cowden / 22nd Mobile Public Affairs Detachment /DVIDS