For anyone else wondering about this, it was the bombing of Hamburg, not Berlin (also called Operation Gomorrah). I found one source that does say Dyson was act

For anyone else wondering about this, it was the bombing of Hamburg, not Berlin (also called Operation Gomorrah). I found one source that does say Dyson was acting as an analyst for the RAF at the time: https://www.nationalww2museum.org/war/articles/apocalypse-dresden-february-1945 https://www.nationalww2museum.org/war/articles/apocalypse-dr...