During the winter months the Army used the time to regroup, rearm, resupply. The order of business was primarily on regrouping and strengthening of the forward lines. Many of the Regiments in the army were drawn from planets within the sub-sector and therefor were reinforced without having to requisition further Imperial assets.
With the Army returned to a fighting capability, and supply lines secure the Lord General is making plans to restart the offensive. Intelligence reports that the enemy hardly could have reinforced in this time as the Navel* blockade reported no enemy ships in the sector. Even if that is so, it will still be a rough slog forward as they no have no doubt dug themselves in deeper than ever before. For the elements of BG82 this shouldn't be a problem as the right flank is more flat leading out to sea. As for the other two Battle Groups... Only time will tell.
* Yes that should be Naval as Siph points out below. But well, I made the mistake I have to live with the mistake. And besides I think it's funny.