[1] https://en.wikipedia.org/wiki/StarCraft_II:_Wings_of_Liberty
Some of the 10-20 year old RTS games got released as HD-editions recently. But they are just the same old games. What is really needed are new games with new content. Not just lame cheap re-releases named "HD". The world needs new Triple-A RTS games, that are not clones of Star Craft 2. Star Craft 1, Age of Empires and Command and Conquer series were better games in many respect and this is what is missing today - non-causul non-F2P new RTS games with realistic scenarios like in C&C Generals and Age of Empires or Empire Earth series.
The rise of "casual" games was essentially irrelevant, actually, but that's another story.
Total War is a computer series of strategy games developed by The Creative Assembly. These combine turn-based strategy and resource management, with real-time tactical control of battles.
It's not a Real-Time-Stragey (RTS) game series like Age of Empire, Command and Conquer or War Craft.
RTS is very useful and you can learn a lot.