 Rennenkampf akawana mukurumbira semutungamiri webhiza anobudirira panguva yeBoxer Rebellion uye Hondo yeRussia neJapan. Achitevera basa mune yekupedzisira, akatungamira chikwata chakadzvinyirira iyo Chita Republic panguva ye1905 Russian Revolution. Izvi zvakamuita kuti awedzere kukwidziridzwa, uye pakatanga Hondo Yenyika I Rennenkampf aive mutungamiri weVilna Military District, ane mauto akashandiswa kuumba 1st Army pasi pake. Akatungamira 1st Army mukupinda kweEast Prussia uye akahwina kukunda kwekutanga kuGumbinnen mukupera kwaNyamavhuvhu 1914, asi akabvisirwa basa mushure mekukundwa paTannenberg, Masurian Lakesuye Łódź, kunyange zvazvo gare gare akaratidzwa kuva asina mhaka nokuda kwezvikanganiso zvakaitwa muHondo ye Łódź. Asunungurwa neongororo yepamutemo pamusoro pezviito zvake, Rennenkampf akapfurwa nemaBolshevik muTaganrog mukati meRed Terror muna 1918. 