its probally a small number.
from the synopsis of the doc:
"The film paints a startling picture of the extent of the problem--today, a female soldier in combat zones is more likely to be raped by a fellow soldier than killed by enemy fire. The Department of Defense estimates there were a staggering 19,000 violent sex crimes in the military in 2010. Twenty percent of all active-duty female soldiers are sexually assaulted.IF
those statistics are true, then that's far from a small number.