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.

Field artillery soldiers are assigned to one of five military occupational specialties: fire control specialist (13J), cannon crew member (13B), fire support specialist (13F), firefinder radar operator (13R), and multiple launch rocket system crew member (13M).

During our four-day visit, we followed future field artillery soldiers in each specialty and learned how they work together to provide field artillery support in battle.