Mezue ahịrịokwu na-esonụ: Korchagin wepụtara onwe ya maka ndị agha Imperial Russian n'oge Agha Iwa Mbụ, bụ́ mgbe e merụrụ ya ahụ ọtụtụ ugboro ma nye ya ihe nrite. O si n'ọkwa onye agha ruo n'ọkwa onye ọrụ nta ma sonye na Red Army n'oge Agha Obodo Russia. Mgbe ọ rụsịrị ọrụ na Internal Troops na nke ikpeazụ, Korchagin nọ na Soviet Central Asia n'oge 1920s, na-eje ozi n'ọkwa dị iche iche na ndị ọrụ. N'etiti afọ ndị 1930, ọ ghọrọ onye isi nke otu ndị agha igwe tupu e jide ya n'oge Great Purge. A tọhapụrụ Korchagin na 1940 ma weghachite ya na Red Army, na-enye iwu nke 17th Tank Division na mmalite nke Operation Barbarossa. Korchagin duziri ngalaba ahụ na Agha nke Smolensk wee gaa n'ihu na iwu mgbe emegharịrị ya na brigade n'ihi nnukwu mfu. Mgbe e bibisịrị brigade ya n'agha nke Moscow, Korchagin ghọrọ onye na-ahụ maka ngalaba aerosani tupu ya enye ndị 17th na 18th Tank Corps na
Agha nke Voronezh. Ọ ghọrọ onye isi nke 2nd Mechanized Corps, nke mechara bụrụ 7th Guards Mechanized Corps, na Septemba 1942, na-edu ya ruo oge fọdụrụ n'agha ahụ. Emere ya dike nke Soviet Union maka iduzi ndị agha n'oge Agha Dnieper, Korchagin nwere ndị agha agha agha.