In WW I Russia managed to lose to a loser, somewhat a world anti-record.
I.e Germany was totally defeated by Britain, France and their allies, but shortly before that in 1918 the already "bolshevik" Russia signed a shameful peace deal with Germany according to which the germans occupied a huge part of territory in N-W of Russia.
Maybe by "the Russian invasion of Western Europe in 1919" a conflict with Poland in 1919-1920 was meant? But anyway Poland is eastern, not western Europe...