Cyc has a very good point. I think we agree on the importance of Delphi. The problem with a Delphi 1st strike is that it may actually take a few turns to take the city, and during that time we will no doubt have trouble in our backyard ie. 'all along the watchtower' in Kashmir - which has the potential to draw our focus away from Delphi before it can be secured.
I would suggest starting with a 2 pronged attack: one army group targets Oka and another (larger) group targets Herakleia. Hopefully these 2 targets can be gained quite quickly. We then redeploy, again with 2 army groups, and the secondary targets would be Thessalonika and Delphi. We should go for Thessalonika with our best offensive units as quickly as possible, and possibly only start to position Infantry around Delphi at this stage. The plan here would be to let the Greeks wear themselves out hitting our Infantry on the mountains around Delphi while we take the now isolated Thessalonika, and then Ephesis. Then, finally with the backyard cleared, we push on with combined forces to Delphi - and perhaps further.
I would suggest starting with a 2 pronged attack: one army group targets Oka and another (larger) group targets Herakleia. Hopefully these 2 targets can be gained quite quickly. We then redeploy, again with 2 army groups, and the secondary targets would be Thessalonika and Delphi. We should go for Thessalonika with our best offensive units as quickly as possible, and possibly only start to position Infantry around Delphi at this stage. The plan here would be to let the Greeks wear themselves out hitting our Infantry on the mountains around Delphi while we take the now isolated Thessalonika, and then Ephesis. Then, finally with the backyard cleared, we push on with combined forces to Delphi - and perhaps further.