"There were plenty of people, and much historical evidence across countries and diverse political positions, of people prepared to fight against fascism. There is much evidence too as to their informal socialist aspirations"
This is not the issue. The left communists who took part in the mass strikes in Italy in 1943 were certainly fighting against the existing fascist power, but they got no help from the democracies. Anarchists from War Commentary of the time wrote a pamphlet denouncing the British state for deliberately bombing northern cities while the strikes were going on; and Churchill issued his instructions to 'let the Italians stew in their own juice', ie let the fascists repress the uprising before the allied armies advance northwards.
As for the socialist aspirations, they also existed among the millions of workers who fought in the first world war, mobilised by the social democrats and trade unions to fight against 'czarist tyranny' or 'Kaiserism'. Revolutionaries, who genuinely 'like' working people, had the courage to stand against that tide of utterly misdirected 'socialist aspirations' and they did the same in world war two.