Mammadov was posthumously awarded the title on 10 April 1945 for his actions during the Vistula–Oder Offensive, during which he reportedly killed 40 German soldiers while surrounded.
After receiving seven years of education he graduated from the Nukha teacher training college in 1939.
On 24 January, during the crossing of the Oder near Breslau in the Rattvits area, Mammadov reportedly evacuated sixteen soldiers and his commander.
During a German counterattack, he reportedly took up defensive positions in a house on the left bank of the river, firing three carbines taken from the wounded.
[4] On 10 April 1945 he was awarded the title Hero of the Soviet Union and the Order of Lenin.