Now, he has taken the next step of confronting his wife, Julie, who is accused of killing their son and daughter in their Florida home.
"Today I met with my wife Julie for the first time since I returned from my duty overseas," Parker Schenecker, 48, said in a statement Friday. "The meeting was both emotional and productive. We discussed numerous topics but focused mostly on how so many people continue to honor and remember the lives of Calyx and Beau.
"I felt it was important and proper to inform her in person about my need to focus on the future, and my intention to file for divorce," the statement continues. "Clearly the events of Jan. 27 have taken Julie and me on different paths."
Julie Schenecker, 50, was charged with two counts of first-degree murder in the shootings of Beau, 13, and Calyx, 16. The Tampa, Fla., mom allegedly told authorities in a confession that she killed them for being "mouthy."
Parker Schenecker, a U.S. Army colonel who recently wrote an essay for PEOPLE about his children, says that remembering his children will help him to heal from his devastating loss.
"I have said for many days now that I will spend the rest of my life honoring the memory of my two beautiful children Calyx and Beau," he says. "This difficult but necessary step will help me to do just that: move forward."