Rubuta ci gaba don wannan sakin layi - Ya koma aiki bayan mutuwar Paul a 1801 kuma an nada shi kwamandan Fanagoria Grenadier Regiment a ranar 31 ga Agusta na wannan shekarar. Ya shiga cikin Yaƙin Ƙungiyar ta Uku kuma ya yi yaƙi a cikin rukunin Langeron a Austerlitz
, inda aka ba shi lambar yabo ta St. Anna, 1st Class; wani masanin tarihin yaƙin ya ce "Kamensky-1's brigade ya wuce gona da iri a cikin mawuyacin hali... [Shi] ya yi fice domin misalinsa mai ban mamaki na ɗaukan mataki da kuma sa baki a lokaci mai muhimmanci a yaƙin". A ranar 27 ga Yuni, 1806, an ba shi mukamin Laftanar Janar kuma an ba shi umurnin 12th Division. Ya shiga Rundunar Sojojin Moldavia kuma ya shiga wani Yaƙin Rasha da Turkiyya, wanda ya shiga cikin ayyukan a Brăila, Constanţa, Babadag, da Varna. A cikin 1810, ya yi aiki a ƙarƙashin ƙaramin ɗan'uwansa, Janar Nikolai Kamensky, kuma ya yi fice a yaƙin Pazardzhik, wanda aka ba shi mukamin janar na sojoji. Ya kayar da sojojin Turkiyya a Shumla a ranar 4 ga Agusta kuma an ba shi lambar yabo ta St. George (2nd Class). Ya umurci hagu na hagu na Rasha a yakin Batin a arewacin Bulgaria a ranar 7 ga Satumba, 1810. A cikin 1812, Kamensky ya ba da umarnin rundunar soja a cikin sojojin Janar Alexander Tormasov kuma ya shiga cikin yaƙe-yaƙe na Kobryn da Gorodechna. Duk da haka, yana da fada tare da Tormasov kuma ya ɗauki dogon furlough a ƙarshen shekara.