I use to love Total Annihilation. One thing that stood out in this game compared to all of the other RTS was that resources were unlimited. You never ran out of food, or whatever. In TA it's Energy and Metal, and as you grew the tech tree you just made more and more.
Add to that the ability to queue orders and set waypoints, and it was not untoward to have automated operations going on constantly.
In the end the games boiled down to keeping up a patrol to extend line of sight so that your forward defenses could take out invading forces from long range. Once your base was stabilized, you could start creeping outward and performing offensive operations.
Against the CPU, the games inevitably ended up being "hose on hose". By this, you had two widely separated bases with endless armies marching between them. Based on where they met, and how far it was from the respective bases, would give you a guide as to who was "winning". When "the hose" finally reached the enemy base, you cracked it open, wreaked havoc, and claimed victory.
While it was combined arms, it was not as "Rock/Scissors/Paper" as many other games are. In many ways, it was just brute force. Streaming heavy armor in to a base was something to behold. The game was very kinetic, with lots of explosions, shrapnel flying, etc.
I remember boosting my computer to 400Mhz so that I could play with 500 units.