FORT LEAVENWORTH, Kansas — Outgoing Fort Leavenworth Garrison Commander Col. Duane Mosier passed command of the Fort Leavenworth Garrison to incoming Garrison Commander Col. Todd Sunday in a ceremony July 1, 2025, at the Frontier Conference Center at Fort Leavenworth, Kansas.
William Kidd, director of the Installation Management Command-Training, said the indoor ceremony might look a little different from what people might be used to seeing.
“There isn’t a field full of troops here, because installation management by its very nature conserves the Army’s warfighting strength by applying the skills of civilians and contractors — dedicated hands, all of them — to operate this great installation.”
Kidd referred to Fort Leavenworth as a special place and lauded the community’s proud history and dedication to helping produce the world’s finest military leaders.
“That commitment brought you here today, and I want to thank the leadership of the Army Combined Arms Center for the tremendous support that you provide each and every day to this garrison,” he said. “We just simply couldn't do our job without your advocacy, partnership and leadership.”
Kidd said it takes more than just ability to do the job well.
“Defending this nation and leading those who do is a tough, complex and unyielding way of life that demands excellence in everything and every step taken. Competence is not enough,” Kidd said. “You have to be the best, do your best each and every day. And the best is what we got with Colonel Mosier each and every day as he led this garrison.”
Kidd said Mosier’s leadership focused on investing in people to build a high-performing team that enabled the installation to grow in the right direction.
“Everything that he touched as a leader or led his people to do changed dramatically for the better. This garrison, ably led by Colonel Mosier, did it all and did it superbly.”
Kidd welcomed Sunday and his family, and said the new commander is ready for the job.
“So, Todd's a Special Forces officer for many years, and he's a highly experienced operational leader and has served in demanding tactical and strategic roles all over the world,” Kidd said. “Prior to his stint here, he was in the Army War College, but before that, he was the (deputy operations chief) at Special Operations Command in Africa. So, he is primed and ready to take on the broad diversity that is Fort Leavenworth, Kansas.”
Kidd told Sunday that he wanted him to remember three things as he leads the Garrison.
“Installation management is a team sport. You can't do it alone,” Kidd said, repeating the acronym ABT: always be a team. “You will never have enough resources for what you need to do, so what will always close the gap between the resources available and the mission to be done are the people you lead. Invest in them constantly, and they will make the rest of this look pretty easy. And then lastly, and probably most important, the garrison has a lot of talented people. You see them every day, but there's only one commander, and, Todd, that would be you.”
Mosier said he was feeling mixed emotions about leaving the role, noting that he won’t miss the texts about issues like power outages, but he commended many “Garrison superstars” from the post’s organizations for their work over the past two years.
“So, on one hand, I feel lighter. I also feel pride, having been afforded the opportunity to join such an amazing and solid Garrison team,” he said. “On the other hand, I feel a sadness to leave this assignment, a sadness I hadn't felt when leaving other jobs.”
Mosier said he sees garrison command as a people business, and he has found it to be extremely rewarding helping others and the community.
“This job has been fulfilling in remarkable ways and brought remarkable people into the lives of my family and me,” he said. “And so, these are things I will greatly miss about this assignment.”
Mosier thanked his Garrison teammates for their friendship and professional expertise. He recognized organizations across the Garrison — from Equal Employment Opportunity to the Directorate of Emergency Services to the Directorate of Public Works to Family and Morale, Welfare and Recreation — for keeping the post safe, providing technical expertise, supporting families and the community, and many other contributions.
“Since June of 2023, (multiple organizations have) planned, executed and supported hundreds of special events, ceremonies, celebrations, community engagements, SITREP drafts, interagency coordinations, workgroups, technological advancements, budgetary gymnastics and message campaigns.”
He thanked the housing oversight team and stressed the need to invest in the “partner-Army and Army-partner” relationship in the future. He recognized DPW’s efforts to help secure the out-year development plan for housing, noting “$120 million of partner investment in this installation for historic home renovations, 48 new townhomes, replacement porches, windows, roofs, all across this installation.”
He said the Garrison’s Human Resources professionals have been flawless, noting their many accolades for the way they take care of people, and he recognized Religious Support Office representatives.
“They are the best in the Army, and carry the weight of a positive reputation, well-earned, as a result of cultivating a community of care for others in service to a cause greater than self.”
Mosier also expressed his appreciation for teammates in Leavenworth, Lansing and surrounding communities.
“Their support not only facilitated the mission, but greatly contributed to my personal growth,” Mosier said. “Thank you for embodying the spirit of teamwork that is the heart of a great community and our Army.”
Mosier said he is confident that Sunday will lead the Garrison with the same enthusiasm and dedication that have been indicative to his career.
“Thank you, Fort Leavenworth, for an unforgettable journey,” Mosier said as he concluded his remarks.
Sunday thanked Kidd and Combined Arms Center and Fort Leavenworth Commanding General Lt. Gen. Milford Beagle Jr. for the opportunity to command at Fort Leavenworth.
“Thank you for the opportunity to command this historic garrison — such a storied installation that remains vital as the intellectual center today,” Sunday said. “The Mosier family has done a tremendous job in keeping Fort Leavenworth a thriving community. I look forward to build upon their legacy and be the good ancestor that you have been all this time.”
Sunday said he and his family have been touched by the warm welcome they have received by the Garrison Team and Fort Leavenworth community.
“I look forward to getting to know each of you, learning your stories and taking care of you in any way that I can,” he said. “This truly feels like the best hometown in the Army, and I am very proud to be a part of it.”
To read Sunday’s biography, visit https://home. army.mil/leavenworth/about/leadership/garrison-commander.
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