Here is some additional information on the Hungarians during Operation Barbarossa in 1941 and later, according to the book "The Eastern Front Armour Camouflage and Markings, 1941 to 1945" by Zaloga and Grandsen. In 1938, Hungary acquired 104 CV 35 tankettes from Italy and began production under license of the Swedish Landsverk L60B light tank, which they called the Toldi. The three brigades which formed the Gyorshadtest (Fast Corps) attacked Russia with a total of 81 Toldis and 60 CV 33 tankettes plus 48 Csaba armored cars. During the drive on the Donets River, the Hungarians suffered severe equipment loses. Their armored vehicles were not heavily armed nor armored enough to stand up to Soviet weapons. The Hungarians had to purchase armored equipment from the Germans in order to field the 1st Armored Division in 1942. A total of 8 Pz Kpfw I Ausf B, 102 Pz Kpfw 38(t), and 22 Pz IV Ausf D were purchased. The Hungarians held the left flank on the German drive on Stalingrad. They were virtually destroyed in the Soviet counter-offensive, with only six tanks surving from the 1st Armored Division which returned to Hungary in early 1942.
A comment on the Italian tankett nominclature. The Italians tanketts were called Carro Veloce (fast) and were numbered according to the year they were produced (e.g., CV 33 in 1933). The CV 35 was virtually the same vehicle, but with different machine guns. In 1938, the Italians changed their designations to L3/33, etc.