Valkyria Chronicles. The best execution of a turn-based squad game I have seen (yes, that includes Silent Storm, both XCOM versions and Jagged Alliance). Don't let the saccharine anime-ness turn you off, the tactical combat is brilliant. The only turn based squad tactical game where you can put 10 squad members in cover behind your tank while you use it to break through an enemy strongpoint. It's all canned missions though, so once it's over, it's over. Still good even so. Good art style too (if you like anime).
Or you can play Warthunder for a bit. It's become my go-to game if I want to shoot things while in a plane. They have tanks too, but its gameplay is more the hidey-snipey-one-shot-kill variety. Don't play it for the grind though, because its grind is terrible.
Seconding the guy who suggested
The Ur-Quan Masters. It's like Mass Effect if it were made back in the 90's, was ship-vs-ship combat instead of an FPS, and had a lot more personality. Seriously, there hasn't been any video game that could come close to the personality of the alien races in Star Control 2. Just a sample:
A race of clams whose society and technological progress is entirely based on cowardice;
Death-worshipping religious zealot spiders;
Sentient biological blob pranksters whose idea of a practical joke is tricking the previously mentioned race of coward clams into becoming fighting slaves (they're not evil btw, just out for a laugh);
Ultra-violent space rhinos that have bombed themselves into the stone age at least 16 times and believe that is the only way to 'progress';
Kamikaze samurai rat-people;
Sentient plants and their depressed mask-wearing friends.
And those are just from the races not directly involved in the main plot. Try it out.