Game is tough but fun if you like a challenging turn based game.
Gacha is at 5% i think for highest rarity.
Each chara has different combat modes - Eg for my fighter jets, i have to think between Air Scout / Air Control (no land attacks) / or bombing mode (stronger land attacks) .
Factors to consider also include Terrain / Enemy compositions etc
You can set auto combat but unless much higher level will be costly in terms of repair resource.
A commentor previously also stated about combined arms (Air units and land units) which stands out from other games. If only they could include sea units as well hehe.
Currently 7 days in and loving it. Read Note