Dachau Concentration Camp, American response

What happened?
Some American soldiers executed SS guards after liberating Dachau.

Why?
They were responding viscerally to the unimaginable cruelty they had just discovered.

Was it sanctioned?
No, but it was effectively ignored by higher command.

Was it legal?
Technically, no—it violated the Geneva Conventions.

Was it prosecuted?
No formal charges were brought.