As with the German faction, the Ostfront Veteranen are not fitted for early offensives as much as other factions, due to the weaker infantry and weaker vehicles, however offensives are not impossible, just harder. The STG 44 and the PPSH can all be utilised by this faction which are very good arms, especially under direct control, alongside a T-34/85 Special unit, additionally, there are a lot of vehicles that are similar to the German faction, such as the SdKfz 250/1 as opposed to the SdKfz 251/1 which is more small and nimble, but less armoured, making offensives slightly harder.
Fairly weak infantry and bad early armour make offensives harder, still quite similar to the German faction. The Ostfront Veteranen faction is similar to Germany in the essence that they hold the same powerful late game tanks that Germany does, bar the Panzer III Ausf N, which isn't much of a loss. Ostfront Veteranen translates from German into Eastern Front Veterans, this faction is obviously composed of those from the Eastern Front, having fought the Soviets, so the history of this faction is just the history of the Eastern Front in WW2, written in better words here and here.