The US has released the list of victims, six of them in their twenties, who were killed in the horrific shooting spree at the country's largest military base in Texas.
US military psychiatrist Maj Nidal Malik Hasan allegedly opened fire on Thursday at the Fort Hood military processing center, killing 13 persons and severely injuring 38 others before being shot and captured.
"These heroes are so much more than simply names," said Col John Rossi, deputy commander of the post, announcing the identities of the victims, who ranged from a pregnant soldier to a newlywed.
"I ask that you remember them all," Rossi said.
The victims ranged in age from 62 to 19. One of the victims was lieutenant colonel and five were involved in providing medical services to soldiers.
The gunman Hasan remains in critical condition and has not regained consciousness, base officials said.
A memorial service has been scheduled for Tuesday at Fort Hood, which would be attended by President Barack Obama and first lady Michelle Obama among others, White House sources said. Details of the trip were yet to be made public.
Immediately after the massacre, Obama asked all Americans "to keep the men and women of Fort Hood in your thoughts and prayers."