 Nyorai kuenderera mberi kweiyi ndima - Davydov akaberekerwa kumhuri yakakurumbira yevakuru veRussia yeDavydovs, uye aive mukoma wehafu wevakakurumbira mukuru Nikolay Raevsky. Akatanga basa rake remauto aine makore gumi nemaviri, paakanyoresa muLifeguard Preobrezhansky Regiment semusoja. Zvisinei, akakurumidza kuendeswa kuLife Guard Horse Regiment, iyo, muna 1799, akava cornet uye makore akati gare gare, musi wa 7 June 1804, colonel polkovnik. Mwedzi yakati gare gare, muna 1805, akarwa muhondo yeAusterlitz uye mumakore 1807-09 akashanda muPoland neFinland neGrodno Hussar Regiment. Zvisinei, pana 23 January 1810 akatora discharge, nemhaka yehutano husina kunaka. Muna 1812, pakati pokupinda kweFrance muRussia naNapoleon, Alexander Davydov akadzokera kuhondo uye akashanda pasi paMikhail Miloradovich muhondo dzeTarutino, Maloyaroslavets, Vyazma, uye pakupedzisira Krasny. Nokuda kwezvaakaita paKrasny, akagamuchira Order of St. Vladimir 3rd class. Mugore rakatevera, muna 1813, akashanda muhondo dzeLützen, Bautzen, Dresden akagamuchira Order yeSt. George, 4th kirasi uye pakupedzisira Kulm. 1814 yaizova gore rake rokupedzisira rokurwisana, uye akashanda muhondo dzeBar-sur-Aube, Troyes, Arcis-sur-Aube, Fère-Champenoise uye pakupedzisira Paris. Musi wa 16 Chikumi 1815, Alexander Davydov akasimudzirwa pachinzvimbo chevakuru-general, ne, sekuwedzera kwaProf. Alexander Mikaberidze, aine kukwegura kwechinzvimbo ichi kubvira 29 Ndira 1814. 