Funny how most of the bad blood stems from the Russian (and, to a lesser extent, Spanish) Civil War.
Probably has a lot to do with the fact those were about the only occasions Anarchists actually tried to get something done on larger scale and butted heads with the Bolsheviks in the process. Arshinov's History of the Makhnovist Movement is a pretty interesting insider take on it (he was one of Makhno's lieutenants), particularly the parts where he more or less grudgingly admits to the reasons his side lost (TL;DR - the Bolsheviks were better organised and more ruthless).
The Makhnovists are far from the only example in the Russian Civil War. Just look at the revolts of the Green Armies, both around Tambov and in Siberia. Or at the mutiny at Kronstadt. And other examples.
...except the loosely defined "Greens", so called because many such groups sheltered in forests, rarely had much anything to do with Anarchism (whereas Makhno's "Blacks" in the Ukraine were explicitly so) and ran the gamut from fed-up peasants (Tambov being a prominent case) and disgruntled soldiers to outright bandits.