[Nick Beale]

One possibility is that the Gruppe consisted of a flying Staffel and a sea-going Flotille.

Seenotteilstaffel (Land) 20 operated in Italy (Campoformido-Udine) from October 1944 to April 1945 and seems largely to have been engaged in reconnaissance over the Adriatic with the Fw 190 A-8.

What little I know about it is in "Air War Italy 1944-45" (Beale, D'Amico & Valentini, 1996).