That would be the 'Musou' series (IE Dynasty Warriors and its brethren).
DW 2
DW 3
DW 4
DW 5
DW 5 Empires
DW 7
DW 7 Empires
DW 8
DW 8 Empires
Samurai Warriors 2
Samurai Warriors 4
Samurai Warriors 4 II
Warriors Orochi
Warriors Orochi 2
Warriors Orochi 3
It was a favourite series of mine, I'm still interested in the likes of Warriors Orochi 4, but the series peaked extremely early with Dynasty Warriors 3, the developers have buggered about with a few things like the combo system (hence why DW 6 isn't here) and an open world style (ditto DW 9). DW 3's massive roster of enemy types, huge battlefields and things like customisable bodyguards were amazing at the time it was released. Instead of figuring out how to make the battlefields more dynamic (like allowing you to bolster allied officers' forces with some of your own units so they're not constantly needing rescuing, whereas you have less support, for instance), instead it's the same tired formula but with hardly any allied soldiers on the battlefield and dispoable enemy fodder. In DW8 you could sweep up non-officer enemies like you were brushing the step, there was even a button to mash for that attack. Nah, it's lost its way, badly.
