Chief General Steve Thull, head of the Luxembourg Army, has announced his retirement in 2026 after 39 years of service, with the Defence Ministry swiftly launching the search for his successor amid what it calls a volatile security environment.

Luxembourg Army Chief General Steve Thull has informed the government he intends to retire on 1 October 2026, after more than 39 years in uniform and six years as Chief of Staff. Defence Minister Yuriko Backes has accepted his request and expressed her gratitude for his services, with Thull now remaining in his post until retirement, according to a government press release.

The Defence Directorate said the application and selection process for Thull's successor began on Thursday, the day of the announcement. The ministry framed the transition against a "threatening and volatile" geopolitical landscape and said the next Chief of Defence will be expected to continue the transformation of the Luxembourg Army, accelerate modernisation, and account for shifting geopolitics, emerging technologies, and social change.

Under the amended law of 7 August 2023 on the organisation of the Army, the new Chief of Defence will be appointed by the Grand Duke on the recommendation of the Government. Eligible candidates must come from the career military in pay group A1 and hold at least the rank of lieutenant colonel.

The Chief of Defence oversees Army administration and advises the minister on military matters. The role includes translating the minister's political directives into military instructions and ensuring compliance. The Chief organises operations, equipment, training, instruction, exercises, readiness, and preparation of units and personnel.

Internationally, the Chief of Defence represents Luxembourg as a member of the NATO and EU military committees.

The ministry did not set a deadline for the selection process but signalled urgency in view of current security conditions.