As I got more provinces, my tax income became so large that nothing mattered. I only survived because of a crucial defensive siege in which I crippled the army and held the fort, denying it of resupply abilities. After becoming the Imperial Vanguard, my naval trade routes were strangled and a rather large army landed on my home island.
In that campaign, I very nearly lost because of my complete loss in the naval theater.
I'm planning on increasing difficulty for future campaigns, but first I'd like to know others' Naval compositions and strategies. I steamrolled through Japan, and with my high tech level, my armies were refreshed and resupplied in no time.
After my first campaign on FotS, I found that my land armies were extremely powerful my well trained, well equipped elite line infantry and highly accurate artillery could decimate armies before they laid a shot on me.