Warcraft 2 is an awesome RTS game that almost any RTS fan should enjoy it.
Depending on which team you choose you will have different types of soldiers and defense systems. Example: Human builder: peasent Orc builder: peon. The game isn't just hack and slash as it might look like. It is actually a strategy game with battle sequences in it. In story mode there are 14 different missions for both teams.(Humans and Orcs have different missions.) They both give a reasonable amount of challenge to game players.
The games interesting strategy system and selection of soldiers each with their own strengths makes the game fun. The graphics and sound effects are so awesome for its time. The free versus mode' long campaign' and online mode make the game fun for a long time. The storyline is cool and it was made very well. It is mostly about Humans and Orcs fighting.
Well I can't give it all away so try it if you like RTS games.