Thanks Gaius. Is it know which Hungarian units that were involved in that operation?
Still searching for Hungarian units involved. However, I have found something which may in part answer your original question-the German reaction.
Alexandar Reljic published an article on "razzia" in May 2010 called "Istina o novosadskoj raciji" ("The truth abouth the Novi Sad raid") and quoted a German document, dated January 31st in which German consul Kampf bring details of his trip to Novi Sad to the German embassy in Budapest. Document is supposed to be available under the signature "BA-MA, RW 5-Ausland-Abwehr/Ausland VI, v. 476-Jugoslawien" in German Military Archive in Freiburg.
Kampf reports being invited to Novi Sad on January 28th by a local NSDAP functionary Hans Prochaska, who argued the local Germans were afraid of the possible continuation of the shootings of local Serbs. Kampf's mission was essentially to ensure that no harm is done to the local Germans by Hungarian authorities (He states on one occasion that no Germans were murdered in the raid, and on another that three German women married to either Serbs or Jews were among the victims).
The most interesting part of the report states the the local Germans were "understandably concerned" by the events. Serbs, their neighbors and work colleagues were suddenly lying dead in the streets and porches. "They are deeply moved by this, especially in case of those Serbs who bravely protected them during the April terror [refering to attacks on local Germans during the April war of 1941]"
Cheers,
Gaius
ADDENDA: Website of "Jewish community of Novi Sad" names General Ferenc Feketehalmy-Czeidner as a commander of the V Corps at Seged; major-general József Grassy as a commander of "II armed group" which deployed 150 patrols of Gendearmerie and 90 patrols of Police for the raid:
http://www.jons.rs/index.php?option=com ... &Itemid=55