In this incisive study, Service surveys the varieties of communist ideologies (from Marx to Marcuse) and regimes (the Soviet Union getting the lion's share of attention) and finds a coherent pattern, which he forthrightly labels totalitarianism… In his fluent narrative style, Service covers a lot of ground… Though bound to be controversial, his is an engaging and useful introduction to a world-shaking movement.

Service critically surveys communism's entire history for a general-interest readership… A panoramic introduction to the ideology, Service's account of communism's idealists and tyrants provides solid grounding in the subject.

To the best of my knowledge, Robert Service's Comrades! is the first history of world communism. It includes every communist state, extinct and surviving, as well as major communist parties and movements around the world. It is a daunting undertaking that required mastery of vast amounts of source materials and the skill to make judicious choices among them… A rich repository of information and insight and should be required reading in institutions of higher education around the world.

The book succeeds in explaining what all the fuss was about, something that a whole generation that has grown up in the aftermath of communism's collapse needs to know.

[A] brilliantly distilled world history of communism.

The decency of communism's ideals and the horror of its effects form the basis of Robert Service's masterly handling of the beginning, progress and (all but) end of communism. Service sees the miseries and tyranny which communists fought against; and he allows credit where it is due, as when he writes of Castro's regime that 'the poor of the island benefited most from the revolution. Blacks in particular were helped by government efforts to improve conditions.'

Robert Service's Comrades! is a timely and ambitious book. Embroiled as we are with Islamic terrorism, the 20th-century struggle between world communism and western capitalism seems as remote now as the 1914 rivalries of kings and emperors must have seemed in 1945. But this was an equally desperate battle for ideas and power. Service strips away the illusions about communism that beguiled generations of admirers. From the moment in 1917 when Lenin forced the disparate revolutionary parties in Russia under his sway, communism became a system based on state terror and the dictatorship of elites in the name of the proletariat.

Service has produced a wide-ranging history that traces communism's intellectual origins back through early modern Europe to ancient Greece as well as its modern spread to countries covering a third of the earth's surface… One of the best-ever studies of his subject… Eschewing the usual convoluted language of Marxist debates, he provides a gripping account of communism's intellectual origins, pedigree and impact… A remarkable accomplishment, and worrying reading. Even though Soviet communism as an idea may have failed, its interaction with the Russian population contains a powerful warning… A reader emerges from Mr Service's volume with the sobering conviction that the only enduring means of preventing political extremism is to establish and maintain healthy institutions of civil society: a tall order indeed.

Service has taken [on] a huge subject but he more than succeeds in doing it justice in this sparkling and thought-provoking narrative… [An] engrossing history.

Service has read widely—using the extensive archives and poster collection of Stanford University's Hoover Institution to good effect—and he has organised his material in an analytical narrative that sweeps the reader along for 500 pages.

In Comrades!, Robert Service presents a lively and detailed account of the damage that was done in the name of 'building socialism'… He lucidly explains how the Bolsheviks gradually imposed their will on an impoverished and often resentful populace.

[A] welcome comprehensive volume narrating the history of world communism.