4th Guards army:

34th Guards rifle division
41st Guards rifle division
62nd Guards rifle division
69th Guards rifle division
80th Guards rifle division
98th Guards rifle division
99th Guards rifle division

52nd rifle division
78th rifle division
84th rifle division
86th rifle division
223rd rifle division

5th Guards airborne division
7th Guards airborne division

26th army:

36th Guards rifle division
66th Guards rifle division
68th Guards rifle division

221st rifle division
151st  rifle division
155th  rifle division
202nd  rifle division
233rd  rifle division
236th  rifle division
74th  rifle division
93rd  rifle division
113th  rifle division

18th armored corps
1st Guards mechanized corps

57th army:

6th rifle corps with 5 divisions

27th army:

15th guards army corps:

33rd army corps
37th infantrycorps

Reinforcements:

5th Guards armored corps
7th mechanized corps

9th army:

39th guards army corps
37th army corps
38th corps

1st Bulgarian army with 3rd and 4th corps.

Source: Hungary Panzers last stand.