[1] On 22 September 1918, Marchenko joined other members of the Huliaipole anarchist group in an insurrection against the occupation forces, aiming to retake their hometown.

[3] Upon linking up with the local partisans led by Fedir Shchus, Marchenko participated in the insurgent counterattack against the Central Powers, culminating in the battle of Dibrivka.

[10] With conflict against the nationalists on the horizon, the insurgents sought an alliance with the Bolsheviks, sending Marchenko to make contact with their local revolutionary committee at Nyzhnyodniprovske [uk].

[20] In Kherson, the insurgents reconstituted themselves and defeated the Volunteer Army at the Battle of Peregonovka, allowing them to capture most of southern Ukraine and halting the White advance on Moscow.

[21] The Red Army swiftly returned to Ukraine and immediately entered into a conflict with the insurgents, but before long a renewed offensive by the White movement began to make another alliance seem necessary.

[26] With Marchenko commanding the cavalry division within Karetnyk's detachment,[27] by November 1920, the insurgents had reached Crimea, finally pushing the Whites out of mainland Ukraine.

[28] On 7 November, a receding tide allowed some Red units to cross the Syvash, upon which the managed to take the northern part of the Lithuanian Peninsula.

[29] On 9 November, at 05:00, Marchenko's cavalry crossed the Syvash, followed by a machine gun regiment commanded by Foma Kozhyn, sustaining many casualties under the heavy fire.

[33] Marchenko's cavalry division managed to break out of their encirclement and, on 29 November, broke the Red Army lines at Perekop and crossed over into northern Taurida.