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Ideally, you should have several teams of soldiers ready at any given point. This is very important to how you play the game, since your roster of soldiers must be much larger to allow rotating soldiers in and out due to fatigue.
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You can deploy a fatigued soldier if you must, but then they'll receive a fatigue injury, and need a longer rest session that can't be skipped. After finishing a mission they must rest for several days. In Long War soldiers suffer from Fatigue. Alternatively, a Scout can draw out overwatch fire for the Assault, allowing the Assault to move up, meanwhile also checking with a Battle Scanner that the Assault's destination doesn't have extra enemies hiding nearby. For example, a Gunner's ability to Suppress works well with an Assault, as the Gunner can pin an enemy and prevent it from overwatching while the Assault moves up for a flank. The new classes are all designed with certain roles in mind, and they work best if they have other roles that synergize with them. If you don't want either of the classes for that soldier you can choose the third Random option to choose a random class of the other 6.
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#XCOM 2 LONG WAR 2 CLASSES UPGRADE#
The Super Skyranger upgrade will allow an additional 2 soldiers on alien base and Exalt HQ assaults, and an extra 4 soldiers on the final mission. Covert extraction missions are fixed at 4 + the covert operative. When defending the XCOM HQ the squad size is fixed at 6.
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It can be increased to 8 with Officer Training School upgrades as usual (though the prerequisites for the upgrades are a little different).
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