Click the Prepare button, next to the Play button.
Then you can click "Edit Defensive Outpost" (Copy of your base and can be modified on Sullust, save on exit) and Request Troops button from team (recommended as it is additional troops).
In "Prepare" mode there's an "i" in upper left corner that explains how this works with 5 fans.
In top middle there is the Squad War statistics - how many attacks, uplinks left (hit the down arrow).
In the button there's our team and opponent team, which all can be scouted anytime (preparation).
A bit about tactics:
High level players attacks high level opponent or your low level teammates will have to attack opponent high level players.
Outposts are at start level 5 - each time they are conquered they increase in level. There are 3 outposts: 1 will increase starfighters damage (good), 1 will increase vehicles damage (better) and last will increase infantry damage (best for Rebels).
Request Troops every time you can.
When the Squad War is ending and if we are winning, please use your Credits and Alloy or you can miss some of the winning bonus, which can be filling up your credits/alloy stores.
My base is high level now, so any upgrade is above 3 mill. credits/alloy - really hard now 
