Do we have a general idea of how many people participated in the Holocaust?

by -Guardsman-

As in: people who worked in death camps (excluding forced labor, of course), rounded up people for the death camps, or knowingly played a part in the supply chain, bureaucracy or planning of the Holocaust.

Holy_Shit_HeckHounds

More specifics are likely available, but from the FAQ is: "Did the Holocaust have an impact on Germany's logistical capacity to carry out combat operations during World War 2?" written by by /u/commiespaceinvader which gives some brief numbers in part 2.

Also from the FAQ is How much did the resources invested in implementing the holocaust set back the Nazi war machine by the same author. It is very similar to the previous answer I linked