came to power by coup. ??...
The Romanovs had presided over 20 million Russian war dead.Tsarism evaporated because it was rotten to the core.When the Revolution broke out Lenin was still in exile.The Russian workers had had enough of the slaughter and starvation and took to the streets with the slogans "Down With The Autocracy!,Down With The War and We Want Bread!"
The Bolsheviks echoed their volcanic discontent with the demands for an end to the war,the redistribution of land and workers control of the factories.This is what the workers wanted-and they gave the October Revolution mass support when others wanted to continue with the war and bring back the old generals who were thirsting for blood.

It is said that more people died during the making of a film by Eisenstein about the October Revolution than during the actual revolution itself.

Used military force against rebels??.....
The Red Army was created to defend the precarious revolution against a bunch of bloodthirsty reactionary anti semitic generals who specialised in torture ,massacre and rape.If they had succeeded the word fascism would have been Russian in origin. Add into the mix the dozen or so western imperial armies and expeditionary forces and you can see why the Revolution needed to defend itself.Trotsky who led the Red Army had no military training and had spent much of the war years living in the slums of New York's Lower East Side.He was a writer,journalist and political agitator and yet his Red Army defeated all that could be thrown against it...Ifor