New Zealand Army in the context of "Irish National War Memorial Gardens"

The American Expeditionary Forces (AEF) was a formation of the United States Armed Forces on the Western Front during World War I, composed mostly of units from the U.S. Army. The AEF was established on July 5, 1917, in Chaumont, France under the command of then-major general John J. Pershing. It fought alongside French Army, British Army, Canadian Army, British Indian Army, New Zealand Army and Australian Army units against the Imperial German Army. A small number of AEF troops also fought alongside Italian Army units in 1918 against the Austro-Hungarian Army. The AEF helped the French Army on the Western Front during the Aisne Offensive (at the Battle of Château-Thierry and Battle of Belleau Wood) in the summer of 1918, and fought its major actions in the Battle of Saint-Mihiel and the Meuse-Argonne Offensive in the latter part of 1918.

Trooper (abbr. Tpr) from the French "troupier" is the equivalent rank to private in a regiment with a cavalry tradition in the British Army and many other Commonwealth armies, including those of Australia, Canada, South Africa and New Zealand; it is also used by the Irish Army.

In the British Army the Royal Tank Regiment, although not a former cavalry unit also uses the term Trooper as do the Special Air Service and Honourable Artillery Company. Airtrooper (Atpr) is used in the Army Air Corps.

The New Zealand Defence Force (NZDF; Māori: Te Ope Kātua o Aotearoa, lit. "Line of Defence of New Zealand") is the three-branched military of New Zealand. The NZDF is responsible for the protection of the national security of New Zealand and its realm, promoting its interests, safeguarding peace and security, as well as supporting peacekeeping and humanitarian missions. It consists of three services: the Royal New Zealand Navy (RNZN), the New Zealand Army and the Royal New Zealand Air Force (RNZAF), as well as tri-service components. As of June 2024, the NZDF has a strength of 15,383 employees, consisting of 10,037 regular force personnel, 3,281 reserve force personnel and 3,294 civilian members. It is supported by the New Zealand Ministry of Defence (MOD) and is commanded by the Chief of Defence Force (CDF).

The principal roles and tasks expected of the NZDF is to provide a combat capable force to defend New Zealand's sovereign territory, and protect critical lines of communication. To provide civil defence support, meet whole-of-government security objectives, as well as commitments to allies and partners, support government agencies, protect and promote regional peace, security and resilience in the South Pacific, and uphold the international rules-based order.

Robert Logan CB (2 April 1863 – 4 February 1935) was an officer in the New Zealand Military Forces who served in the First World War as the Military Administrator of Samoa.

Born in 1863 in Scotland, Logan migrated to New Zealand in 1881 and took up farming. Also involved in the militia, he became a professional soldier in 1912 when he joined the New Zealand Military Forces. He was commanding the Auckland Military District at the time of the outbreak of the First World War and was appointed the commander of the Samoa Expeditionary Force, dispatched from New Zealand to occupy the island of Samoa, a territory of the German Empire at the time. Samoa was easily occupied on 29 August 1914 and Logan became its Military Administrator; he remained in this capacity for the duration of the war. Although he was decorated for his services, his administration of Samoa was later criticised, particularly in relation to the handling of the influenza outbreak of November 1918, which led to 7,500 deaths. Logan retired from military service in 1919 and settled in Devon, England, where he died in 1935.