The Texas church madman was a disgraced Air Force veteran who was court-martialed in 2012 after assaulting his wife and child, reports said.

Devin Patrick Kelley, who joined the military in 2010, was given a bad conduct discharge and slapped with 12 months of confinement in 2014 after his court-martial, CBS News reported.

The military said Sunday that Kelly served in logistics readiness at Holloman Air Force Base in New Mexico from 2010 until his discharge.

The Pentagon also confirmed that Kelley was an airman “at one point,” but did not provide additional details.

Kelly was married and lived in a wooded area on the rural, western outskirts of New Braunfels, north of San Antonio.

His mother-in-law has a post office box in Sutherland Springs, where he launched his massacre, about 50 minutes away.

Neighbors told the Dallas News that someone in his home had recently been hauling large household items, including couches, recliners and bikes, to the curb.

They also said they had been hearing rapid-fire gunshots at night from somewhere on the vast Texas property.

A LinkedIn profile purportedly belonging to Kelley says the killer graduated from high school in 2013, and briefly taught at a Bible school.