Det grodde fram – Trondheim 1940 – 1945 is a Norwegian documentary film from 1947 about the activities of the Norwegian resistance movement in Trøndelag during the occupation of Norway by Nazi Germany during the Second World War.

The film includes both material filmed during the war, and material filmed shortly after the war ended, and is similar to a newsreel. The film also includes reenactments by actual resistance members during the war such as Odd Sørli and Erik Gjems-Onstad. The film has been re-released, and premiered again in Norwegian cinemas on 8 May 2018, in connection with the Norwegian Liberation Day.