It was actually pretty huge organization grouping most Polish underground from ultranationalists to communists, but mainstream AK reflected mostly the ideas of prewar government, that is, Polish version of fascism.

You probably think of Warsaw Uprising. Galaxy brains set up their only major action at a time when entire Red Army just finished the biggest offensive in history of humanity and needed a lot of time to regroup and rearm. In the meantime nazis managed to fortify the city and also gathered significant forces to defend it, moreover, those forces were the worst butchers in entire nazi army, including RONA and Dirlewanger brigade, commanded by the SS Obergruppenfuhrer Erich von dem Bach-Zelewski, infamous for murdering at least 1,5 million people in Poland and USSR.

They also didn’t even hide that the uprising is aimed against the Soviets, it was part of the Operation “Burza”, where AK was supposed to be taking land where Germans leave retreating before the Red Army and turn it into independent Poland and then say “fuck you, get lost” to the advancing Soviets. I have no idea how anyone could even think of such nonsense (well, the London government could, they weren’t famous for firm contact with reality, even Churchill of all people bashed them for being delusional fools). So i would say most of fault fall on the people like general Komorowski who ordered this.

Of course the massacre ensued, and rightoids blame Soviets. Though entire issue is not as uniformly managed as Katyn, there are some serious dissenting voices in mainstream. Hell, even general Anders, commander of Polish army in the west and himself a shady figure, said absolute truth about the uprising “It was aimed militarily against Germans, politically against Soviets and really against Poles”.