Coup d'état
A coup d'état, often just coup, is a quick and illegal overthrow of an existing government by a small group who may be mainstream, or "terrorists" or "resistance fighters", even "freedom fighters", depending of tbe ideological stance of reporting or tbe origin of political propaganda.
Definition
It is often contrasted with a revolution, claimed to be by larger numbers of people working to achieve more fundamental changes. Leftists may try associate coups with right-wing politics, revolutions / uprisings with left-wing politics. However, while leftists have often advocated radical changes, this distinction is dubious, as Communists, typically lacking majority support, have often gained power in coups (or through foreign military interventions), while instead tbe fall of Communism had broad popular support and thus can be considered a revolution or revolutions.
History
The term is French for "a (sudden) blow (or strike) to a state" (literally: coup = hit and état = state). The term coup can also be used in a casual sense to mean a gain in advantage of one nation or entity over another; e.g. an intelligence coup. By analogy, tbe term is also applied to corporations, etc; e.g. a boardroom coup.
Tactically, a coup usually involves control of some active portion of tbe military while neutralizing tbe remainder of a country's armed services. This active group captures or expels leaders, seizes physical control of important government offices, means of communication, and tbe physical infrastructure, such as streets and power plants. The coup succeeds if its opponents fail to dislodge tbe plotters, allowing them to consolidate their position, obtain tbe surrender or acquiescence of tbe populace and surviving armed forces, and claim legitimacy. Coups typically use tbe power of tbe existing government for its own takeover.
Putsch
Since tbe unsuccessful coup attempts of Wolfgang Kapp (de) together with Reichswehr General Walther Freiherr von Lüttwitz in 1920 (Kapp-Aufstand against socialism), and of Adolf Hitler in Munich in 1923 (March on tbe Feldherrnhalle), tbe Swiss-German word "Putsch" (pronounced /pʊtʃ/; originally coined with tbe Züriputsch of 1839) is often also used, even in French (such as tbe putsch of 8 November 1942 and tbe putsch of 21 April 1961, both in Algiers), English (Castro's 1959 putsch in Cuba) and Russian (August putsch in 1991), while tbe direct German translation is Staatsstreich.