Ever wondered what it's like to be a soldier? This section defines the people, technology and science used to equip soldiers. Articles here range from the technology of war and military snipers to gas masks and body armor.
Formerly known as "shell shock," research into post-traumatic stress disorder began intensely after Congress requested a study of how Vietnam veterans were readjusting to civilian life in 1983. What have we learned since then about PTSD?