I found a thread here (but I can't find it) about comparing Lucretia Merces' strategy during the Sun Rune Wars with the scorched earth campaign of Russia when Napoleon of France invaded it. And I found it interesting that in-game strategies in the Suikoden series are based or are similar to real-life historical military strategies.
So I am curious about what type of strategies were used during the Gate Rune Wars, the Dunan Unification Wars, the Fire Bringer Wars (1 and 2), the Island Nations Unification War (not sure on this one), and the Sun Rune Wars.
Well, let's take Shu's strategy during the Dunan wars. He just kept on forging alliances with the different cities in Dunan while keeping the Highland Army at bay. At first they were in a defensive stance when Luca was still alive. But after his death, Highland had been decreased in strength while the newly-forme Dunan National Army got stronger. Thus, they started to take an offensive stance by slowly re-taking places in Dunan which have become Highland territory. And in the end, they won out against Highland and they took L'Renouille, Highland's capital, and changed its name to Higheast.
What made me curious there was that why Shu sent Kiba to a suicide mission just to lure Leon Silverburg out of Highland. Maybe because as long as Highland has Leon as a strategist, Dunan has a lower chance of winning?
I was also looking for that thread that discussed which Suikoden army will win a Suikoverse World War. But in my opinion, before S5, it was between Dunan, the Grasslands, and Harmonia, but after that, I'm considering Falena as a contender for the best army in the Suikoverse. But then again, it might depend on the situation. I'm curious as to which army will win assuming this world war happens after S3.