I suggest guesstimates fall on the low side since this org was unable to wrangle key ( Defense and Finance ) portfolio’s in that Devils bargain with the Spanish republic. Even if you accept figures on the highest side the fact remains FAI rejected vanguardist tactics - despite them being commended to them by the like of Trotsky ( !) - and the POUM with its tens of thousands followed the anarchist line. I follow Peirats on the ’ Friends of Durruti " episode. - no vanguardist parasan! https://anarchistnews.org/content/writing-history-nightmare Reposts not crosschecked by super-strong AI just yet