A U.S. soldier killed in Afghanistan in an insider attack by a member of the Afghan National Police on Sept. 3 was on his 13th deployment.

According to Task & Purpose, a military-focused news site, U.S. Army Command Sgt. Maj. Timothy A. Bolyard, 42, was the highest enlisted soldier in the 1st Squadron, 38th Cavalry Regiment, which deployed to Afghanistan with the 1st Security Force Assistance Brigade (SFAB) in March. Bolyard had previously earned six Bronze Stars — two with valor devices.

Afghan military commander Gen. Abdul Raziq told Stars & Stripes that the attack began after gunfire “erupted from a police Humvee, hitting American servicemembers in the back.”