Timeline update

Sypheros 1	Party encounters and defeats an Athach. Party attacks one of Jalahand's trading parties, killing most of it and taking some prisoners.
Sypheros 3	Party arrives back at Castle Granis with prisoners. All of the 20 original trainees are now 2nd-level Warriors. The trench in front of the castle is complete.
Sypheros 4	Zurga escapes a forced marriage and shelters in a cave. The party defeats two behirs in order to rescue her.
Sypheros 5	The party sets off for Garduk in order to depose Kardash.
Sypheros 6	Thurzar arrives back at Castle Granis in the battle-wagon with all the goods he was sent for and a gnoll siege engineer but without Merred Nastor.
Sypheros 7	The party arrives at Garduk, defeats Kardash and begins mustering an army to attack Jalahand.
Sypheros 8	The party leaves Garduk, leading a large army.
Sypheros 10	The party and goblin army arrives at the rendezvous point but the army from Castle Granis does not arrive as scheduled.
Sypheros 11	The army from Castle Granis arrives, having been delayed because Thurzar spent an extra day in Graywall looking for Merred Nastor.
Sypheros 12	The orc chieftain of a goblin village near to where the army is camped offers another unit of goblins if the party will rid his village of a disease. The party investigates and defeats a mind flayer and his minions, but Ug is killed. Grim and Verschoyle set off for Graywall with Ug's body to attempt to reincarnate him.
Sypheros 13	Grim and Verschoyle meet Jalahand's gnoll reinforcements on their way to Stoneskull. They manage to convince them that Jalahand is already dead and to return home.
Sypheros 14	Grim and Verschoyle arrive at Graywall with Ug's body, and take it to a gnoll druid that the mercenaries had recommended. However, Ug's soul refused to return. Verschoyle befriends Graywall's most powerful wizard (or at least its most powerful commonly-known wizard), Tharrad Katarn. Grim and Verschoyle also managed to locate the cleric Merred Nastor who had gone missing on his shopping trip to Graywall. A goblin bowmaker had noticed his poorly-concealed Silver Flame symbol and tipped off the arena guards. He was due to be executed in the arena the next day. Verschoyle enters the arena in order to fight on his behalf and spends the night hin the cells. Meanwhile, Grim kidnaps the goblin bowmaker.
Sypheros 15	In the arena, Verschoyle defeats the manticore that was due to kill Merred Nastor. A bugbear scout from Darguun introduces himself to Grim and Verschoyle. Verschoyle and Tharrad Katarn continue to swap spells.

I don't remember how long you decided to stay in Graywall for. I think Verschoyle was crafting some kind of magic item using Katarn's workshop, but I can't remember what it was. In any case, the tomorrow's session will begin with Grim and Verschoyle leaving Graywall to rejoin their army.