We have a monument commemorating children fighting in the uprising: https://pl.wikipedia.org/wiki/Pomnik_Ma%C5%82ego_Powsta%C5%8...
I used to live nearby and was always weirded out by the statue just being one of the required two-minute stops for all the tourist groups. A short monologue, then move on to the next attraction...
And the "W" Hour is commemorated on every 1st August at 1700 hours
https://youtu.be/Ejd2rsXoQSI
https://en.wikipedia.org/wiki/%22W%22_Hour?useskin=vector
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Also, if you ever have a chance then head to Warsaw Rising Museum:
https://en.wikipedia.org/wiki/Warsaw_Rising_Museum?useskin=v...