There are misconceptions about the Russian Revolution, and one of them is that somehow the Bolsheviks had support because they promised an end to the war. While there was war weariness in Russia, it was not any greater than in any of the other participants. Anti-German feeling was deep seated in the Russian population and there were many who felt that the war should be continued to victory given the cost of the struggle.

The Bolsheviks engaged in a coup to seize power, despite the fact that from 1928 onwards they called it the "Great October Socialist Revolution" - prior that time they accurately labeled it the "October Coup" (the actual French word is oddly never used in Russian despite the Russians' love of French loanwords - переворот, which means "overthrow", is used instead).

The reason the Russian army melted away in 1918 is not because the soldiers were infected with Bolshevik anti-war propaganda. It was because the Bolsheviks promised them LAND OWNERSHIP (which of course they then took away under Stalin). The army, largely made up of peasant conscripts, went back to their home villages as fast as they could to be there when the land was handed out.

If the Bolshevik coup had failed, then the Constituent Assembly would likely have come to power with a largely Socialist Revolutionary government and Kerensky would likely have remained as Prime Minister of Russia.

Given that the Russian voters endorsed Kerensky and his party in their actual voting for the Constituent Assembly (they won 370 out of 703 deputies), the notion that Russians were doing anything in their power to stop the war is a bit skewed.