The reason the proletariat lost the civil war wasn't that they had officer elections (in fact, by many accounts the anarchist militias were the most effective fighting forces). The issue was that they weren't able to get enough arms to the front lines. The POUM argued that if they had continued seizing industry from the capitalists then they would have been able to produce more arms. The Communist party argued that they needed to stop doing that in order to from a temporary alliance with the liberals in order to create a united front against fascism. The communists argued that the failure of the proletariat in the Spanish civil war had more to do with a lack of international support.
Anarchists aren't against revolutionary violence, they just want to use the minimum amount necessary (while still using the necessary amount). In fact, the legitimacy of the CNT-FAI's enslavement of fascists during the civil war is a point of debate among anarchists. The other check anarchists want to put on revolutionary violence is making the armies accountable to the people and the soldiers (for example, in Kurdish Syria there are two armies, the YPG-YPJ, as well as the HPC. The YPG is a state conscripted professional army while the HPC is an elected volunteer military in place for local defense and holding the YPG accountable) The YPG, like the Red Army has officer elections and unlike the Red Army treats "commander" as a rotating duty rather than an ongoing rank.
The reason the proletariat lost the civil war wasn't that they had officer elections (in fact, by many accounts the anarchist militias were the most effective fighting forces). The issue was that they weren't able to get enough arms to the front lines. The POUM argued that if they had continued seizing industry from the capitalists then they would have been able to produce more arms. The Communist party argued that they needed to stop doing that in order to from a temporary alliance with the liberals in order to create a united front against fascism. The communists argued that the failure of the proletariat in the Spanish civil war had more to do with a lack of international support.
Anarchists aren't against revolutionary violence, they just want to use the minimum amount necessary (while still using the necessary amount). In fact, the legitimacy of the CNT-FAI's enslavement of fascists during the civil war is a point of debate among anarchists. The other check anarchists want to put on revolutionary violence is making the armies accountable to the people and the soldiers (for example, in Kurdish Syria there are two armies, the YPG-YPJ, as well as the HPC. The YPG is a state conscripted professional army while the HPC is an elected volunteer military in place for local defense and holding the YPG accountable) The YPG, like the Red Army has officer elections and unlike the Red Army treats "commander" as a rotating duty rather than an ongoing rank.