
1) Russian surname
Found on
https://www.crosswordclues.com/clue/rumyantsev

The Rumyantsev family (Румянцевы) were Russian counts prominent in Russian imperial politics in the 18th and early 19th centuries. The family claimed descent from the boyar Rumyanets who broke his oath of allegiance and surrendered Nizhny Novgorod to Vasily I of Moscow in 1391. The first Rumyantsev to gain prominence, Alexander Ivanovich ...
Found on
http://en.wikipedia.org/wiki/Rumyantsev

Operational code name for Soviet counter offensive at the battle of Kursk, following operation Citadel - August 1943
Found on
https://www.encyclo.co.uk/local/20490
No exact match found.