NA: Awakening w/ Gundam Generals - Battle of Sekigahara (Sanada) Part 2: The Impossible, Possible
In this part: With all of the previous fictional changes coming together, the actual Battle of Sekigahara ends with a Western Army victory this time, and the (early) end of Tokugawa Ieyasu.
Very difficult battle to win even on Easy difficulty, and likely even more difficult than this battle's depiction in NA: Sphere of Influence. The numerical advantage is a lie. Losing even one unit makes Kobayakawa turn traitor on you as per the historical path, and virtually all of the Eastern Army's generals (i.e. Hosokawa, Ii, Kato, Fukushima, Nagamasa, Honda) are vastly better than yours at the start. You really have to keep your units moving at the right times to make sure Hiratsuna, Toda, Konishi and Ukita don't get their asses kicked or cornered, regroup and lure them back, and make good use of that Falling Rocks key point to sap away the Eastern Army's strength until you finally get control of your other units.
I know this is a run 'with Gundam generals' but not much use of them yet in a historical battle. Next parts onward we'll likely see what Londo Bell and Neo Zeon are really made of in this time period, though.