We simply do not have sufficient numbers to both help the other southern tribes and take the pillar at the same time at most we can send Mardud a jade wizard but the forces are already taking casualties from fighting Fimir when they are still setting up just imagine what will happen if we split the army and attack a castle that has been held for decades.
We have sufficient numbers to do both. We need multiple high rolls to succeed, but our numbers are good enough to get the ball rolling for both. The Oghams are going to have recruitable units from the other tribes, so them having low numbers is not a massive immediate fail, so long as the first oghams are retaken with minimum losses. The weak point is the Pillar, however MAGIC is a multiplier, and The Albionese are not under PLAYER CONTROL.
The Oracle and her units are not under Player Control, no telling where she goes though.
The party is getting split, because the Albionese are divided among themselves in our party. There is a CHANCE that the Albionese will split up by themselves. Mardudd will take Albionese on his own to go after the Oghams. Dividing the Albionese supporting the recapture of the Pillar and thus the Albionese support will be divided anyway!
The Albionese have 3120 troops in total + 6 Druids + 2 Named Heroes (UNRELIABLE SUPPORT for the single empire push)
Mass's plan
Empire has 1650 cavalry + 7 magicals + 1 Hero Unit go after Pillar
Empire has 873 elite infantry + 4 magical + 2 Hero Units go after Oghams
The city was built at the Great Ogham. They have been sitting on it for a century.
What is your point? That just means the fimir are more likely to completely take the Great Ogham for their usage/objective/ritual right now, if they haven't controlled it yet. Fimir have had years of the oghams building up magic storage canisters to break the Great Ogham or something. Any delays will allow the Fimir at the fimir City to complete that desecration of the Great Ogham.
Are you trying to say that the players should take all the time in the world to allow the fimir to desecrate the Great Ogham. That any speed will not matter when the Great Ogham has been in the hands of the fimir for near a century already.