Kammala jumla mai zuwa: Dan uwan Pavel &amp; Alexander Tuchkov, Nikolay ya fara lura da shi a matsayin Babban Janar wanda ke jagorantar Brigade na reshen Gortchakov a karkashin Korsakov a Switzerland, 1799, yana aiki a
Yaƙin Zurich na biyu 25 zuwa 26 Satumba. A cikin 1806 ya ba da umurni ga rukunin 5 na rundunar sojojin 2 na Buxhoeveden a ƙarƙashin Mikhail Kamensky a Poland, kuma ya yi aiki a Yaƙin Pultusk a ranar 26 ga Disamba. A cikin watan Janairun 1807 ya umarci ƙungiyoyi uku (5th, 7th & 8th), da kuma gefen dama a Eylau 7/8 Fabrairu 1807, inda sojojinsa suka fara shiga. An sanya shi kwamandan a gaban Narew a wannan bazarar. A ranar 11 ga Yuni ya kori Claparède daga Drenzewo & Borki, amma Andre Masséna ya tilasta shi a ranar 12. Bayan jin labarin rashin nasarar da aka yi a Friedland a ranar 27 ga watan ya yi watsi da Ostrolenka &amp; koma baya a Tykoczin, kuma daga baya Tolstoi ya maye gurbinsa kafin yarjejeniyar Tilsit.