Before we talk about squad composition, stop thinking about your "A-Team." In LWotC, you have a roster of 40-50 soldiers, and you will need every single one.
Every pod on the map has a hidden "awareness" meter. If you fight a long, four-turn firefight with one pod, every other pod on the map is walking toward the noise. Solution: Kill pods in 2 turns or less. If a fight goes to Turn 3, you are now fighting the entire map , not one pod. xcom 2 long war guide
"Debriefing over," Miller said. "Let's get to work." Before we talk about squad composition, stop thinking
Before we discuss tactics, you must unlearn the vanilla mindset. Solution: Kill pods in 2 turns or less
Do not launch missions at 0% infiltration unless you have no choice. Wait. Let your soldiers hide in the bushes until they are ready to strike.