Lummer signs on as Adjutant General chief

By Robert TimmonsAugust 21, 2025

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1 / 7 Show Caption + Hide Caption – Col. R. Arron Lummer, chief of the Adjutant General Corps and AG School commandant, receives the colors from Col. Jason Edwards, Soldier Support Institute commander, during a change of commandant ceremony held Aug. 19. Lummer assumed duties from Col. Chesley Thigpen. (Photo Credit: Robert Timmons) VIEW ORIGINAL
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2 / 7 Show Caption + Hide Caption – Col. R. Arron Lummer, Adjutant General School commandant and chief of the AG Corps, speaks during a ceremony held at the Soldier Support Insitute, Aug. 19. (Photo Credit: Robert Timmons) VIEW ORIGINAL
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3 / 7 Show Caption + Hide Caption – Col. Jason Edwards speaks during an Aug. 19, 2025 change of commandant ceremony for the Adjutant General School. Col. R. Arron Lummer became the AG School commandant and chief of the Adjutant General Corps at the event. (Photo Credit: Robert Timmons) VIEW ORIGINAL
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4 / 7 Show Caption + Hide Caption – A flutist with the 282nd Army Band plays a tune before the Adjutant General School's change of commandant ceremony held Aug. 19 at the Soldier Support Institute. (Photo Credit: Robert Timmons) VIEW ORIGINAL
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5 / 7 Show Caption + Hide Caption – An adjutant general Soldier watches as Col. Jason Edwards, Soldier Support Institute commander, speaks during the AG School change of commandant ceremony, Aug. 19. (Photo Credit: Robert Timmons) VIEW ORIGINAL
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6 / 7 Show Caption + Hide Caption – The Soldier Support Institute shoulder sleeve insignia. (Photo Credit: Robert Timmons) VIEW ORIGINAL
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7 / 7 Show Caption + Hide Caption – Col. Chesley Thigpen, former commandant of the Adjutant General School, speaks to Col. R. Arron Lummer, who took over as the AG School commandant and AG Corps chief, Aug. 19. (Photo Credit: Robert Timmons) VIEW ORIGINAL

Col. R. Arron Lummer became the 23rd chief of the Adjutant General Corps and the 37th commandant of the AG School during a ceremony held Aug. 19 in the Soldier Support Institute auditorium.

Lummer assumed the titles after receiving the AG School colors from Col. Jason Edwards, SSI commander during the ceremony. Edwards received the colors from Col. Chesley Thigpen before passing them to Lummer.

The ceremony is simple and full of tradition. The passing of the colors is the key to a change of commandant ceremony as the banner served as a rallying point during war time. When Edwards passed the colors it represented the school never being without a leader.

Edwards praised Thigpen’s efforts over the past few years including leading a team to develop a new military occupational specialty for recruiters. The process normally takes 5 years – Thigpen got it done in one.

Thigpen is leaving to become the Army Training Center and Fort Jackson’s deputy commanding officer.

The transition was seamless between the two leaders, Edwards said. “What you see on both sides of the aisle here today is humble.”

“You’re humble leaders focused on the mission, focused on the training, and focused on Soldiers,” he added. “So, thank you for making this a seamless transition.”

Lummer comes to Fort Jackson from Korea where he was the Assistant Chief of Staff, G1, for Eighth Army.

“I think most will find Arron to be the right Soldier to lead the branch into the future,” Edwards said. “The AG School and its amazing personnel are ready for you.”

Lummer said he is proud to be chosen for the position.

“I’m immensely proud to be on this team,” he said to the AG Soldiers present at the ceremony. “These are tough, exciting times, and we have a lot of work to do, and I absolutely believe that there’s virtue in action – so let us get to it.

“Number 37 is on the net, sir.”