Join the Resistance: Attack on Starkiller Base

Join the Resistance: Attack on Starkiller Base is the third installment in Star Wars: Join the Resistance, a series of junior novels written by Ben Acker and Ben Blacker. The book continues the adventures of J-Squadron, a group of young recruits in the Resistance. The novel wil be published by Disney–Lucasfilm Press and released on July 31, 2018.

Publisher's summary
''The members of J Squadron are back at it again, fighting the First Order, and trying desperately to be as cool as Poe Dameron. Having escaped the First Order, this ragtag group is on the run--trying to get back to the Resistance before it's too late--in the third book of this hilarious Star Wars-meets-The Goonies original fiction series.''