Imperial and Royal Navy in the context of "Royal Hungarian Honvéd"

The Common Army (German: Gemeinsame Armee, Hungarian: Közös Hadsereg), as it was officially designated by the Imperial and Royal Military Administration, was the largest part of the Austro-Hungarian land forces from 1867 to 1914, the other two elements being the Imperial-Royal Landwehr (of Austria) and the Royal Hungarian Honvéd. However, it was simply known as the Army (Heer) by the Emperor and in peacetime laws, and, after 1918, colloquially called the k.u.k. Armee (short for Imperial and Royal Army).

Established on 15 March 1867 and effectively disbanded on 31 October 1918 when its Hungarian troops left, the Common Army formed the main element of the "armed power" (Bewaffneten Macht or Wehrmacht) of the new dual monarchy, to which the Imperial and Royal Navy (k.u.k. Kriegsmarine) also belonged. In the First World War all land and sea forces of the monarchy were subordinated to the Armeeoberkommando set up in 1914.

The Imperial-Royal Landwehr (German: kaiserlich-königliche Landwehr or k.k. Landwehr), also called the Austrian Landwehr, was the territorial army of the Cisleithanian or Austrian half of the Austro-Hungarian Empire from 1869 to 1918. Its counterpart was the Royal Hungarian Landwehr (k.u. Landwehr). The two Landwehrs, together with the Common Army and the Imperial and Royal Navy, made up the armed forces (Bewaffnete Macht or Wehrmacht) of Austria-Hungary. While the name, "Imperial-Royal", might seem to suggest a link between the "Imperial" (Cisleithanian) and "Royal" (Transleithanian or Hungarian) halves of the Empire, in this context "Royal" actually refers to the Kingdom of Bohemia (Königreich Böhmen or České království) - not a sovereign kingdom on par with the Kingdom of Hungary, but a crownland of Cisleithanian Austria-Hungary and possession of the Habsburgs, who remained formally entitled to kingship. In this sense, the Kingdom of Bohemia was comparable in status to the Kingdom of Galicia and Lodomeria and the Kingdom of Dalmatia.

Unlike the German Empire, where the Landwehr mainly comprised reservists and volunteers, the Imperial-Royal Landwehr consisted of regular units. It was fully established with regular troops and not partly mobilized or cadred. The Landwehr should not be confused with the Landsturm which was a volunteer militia.