 Kọ itẹsiwaju fun paragirafi yii - Ni Oṣu Kẹjọ Ọjọ 9, Ọdun 1799 Ilya Alekseyev ni igbega si ipo ọgagun ati ni kete lẹhin, o ṣiṣẹ bi olori awọn ọlọpa ilu Moscow. Lẹhin iyipada ti Squadrons Moscow Police ni Regiment Hussars Mitau, a yan ni olori ati pe o kopa ninu ọpọlọpọ awọn ogun lori ilẹ Prussian. Ó fi ìgboyà hàn nínú àwọn ogun Eylau, Guttstadt, Heilsberg àti Friedland : ó ṣe tán. Gẹgẹbi ẹsan fun igboya rẹ ni ogun ni 24 May 1809, o ni igbega si Major General. 