But sometimes soldiers fail to show up because they've taken their own lives or been involved in accidents or foul play.
Such was the case with Pvt. Gregory Wedel Morales, whose body was found in a shallow grave near Fort Hood this summer — 10 months after the Army declared him AWOL without a thorough search. When Morales disappeared, he was just days away from an honorable discharge. Though his family immediately suspected foul play, Army investigators insisted Morales was an adult who had left the base voluntarily.
"They presume the worst of the individual rather than presuming that something nefarious has occurred with them at the onset," said Diana Danis, advisor to the Women Veterans Social Justice Network.
As of the end of August, there were 830 AWOLs throughout the Army worldwide, according to
ABC News. More than a thousand people are listed on the Army's deserter rolls.
But former Army Military Police officer Maggie Haswell said they haven't all left by choice. Seven years ago, she founded the Warriors Aftermath and Recovery Facebook group to support families of missing service members. In that time, she's been involved in hundreds of cases, acting as a liaison between families, the military, and local law enforcement.
According to Haswell, Army investigators often don't try to understand what soldiers were going through when they disappeared.
"You have to think like them," she said. "To do that, you have to know their state of mind and you have to know them as a person. That comes with getting information from friends, from coworkers, from family members, all kinds of things. So this is not something that the Army does."
Tragedies At Fort Hood Have Led The Army To Rethink Its Response When Soldiers Go Missing