The MNHM was initially built by passionate history enthusiasts with the great support of the municipality of Diekirch and the Luxembourg army and has been continuously expanded.

In close cooperation with hundreds of veterans from both sides as well as countless civilian witnesses, the emotions as well as cautionary memories of the war generation have been preserved for posterity in the form of 50 unique dioramas.  This includes tens of thousands of exhibits and the museum's extensive archives for the international understanding of peoples in peace.

Educational programmes for schools and lyceums are continuously adapted and developed by a team of experts from the museum. The museum's specialised extensive military history library and internal archives can be made available for research work by university students.

On an exhibition area of 3,200 square metres on four floors, the museum's centrepiece of is the poignant portrayal of the 'Battle of the Bulge', which took place from 16 December 1944 to 28 January 1945. The exhibition depicts the indescribable suffering of the civilian population and the desperate survival of the young soldiers amid a relentless battle of material with poor equipment in a freezing cold winter of the century.

Additionally, the exhibition includes all types of weapons used on both sides in the ’Battle of the Bulge‘ (also called the Ardennes Offensive).  In addition to the diverse thematic areas of infantry weapons, the visitor is also offered a profound insight into the state of weapons technology at the time, from artillery to tank destruction.

More than 50 military vehicles and cannons from both sides can be admired in a spacious room. The areas of communication and secrecy are also thematised with a large number of radio sets, even a fully operative 'Enigma' cipher device. Original parts of the 'Vengeance weapons' such as the  V1 and V3 can also be seen.

Another important museum section is dedicated to the Luxembourg army. With countless exhibits, photos and documents, the history of development is portrayed over the epochs of the founding years (1815 to 1940), the reorganisation of the army within NATO and the Cold War (1945 to 1991), the period after that, especially with the peacekeeping missions of the United Nations and the modern challenges (1992 until today) .Each period within the museum is vividly explained with the respective infantry equipment, uniforms, weapons, vehicles, dioramas of the missions.

Each period within the museum is vividly explained with the respective infantry equipment, uniforms, weapons, vehicles, dioramas of the missions.

In addition, many specific topics are addressed, such as the Grand Duke's special institutional relationship with the army, its military values, and its tasks in the service of the country.

Multilingual group tours as well as additional information can be requested in advance of a visit at the museum.