Mobile Suit Gundam: The Revival of Zeon

Kidou Senshi Gundam: Zeon no Saiko
機動戦士ガンダム・ジオンの再興

Prequel

Gundam ZZ
Kidou Senshi Gundam ZZ· 機動戦士ガンダムZZ
manga

The Axis, which was supposed to have been struck by Camille, is still alive! Our new hero, Judau Ashta, gets into the super mobile suit "ZZ Gundam" and fights against them!

Prequel

MS Senki: Kidou Senshi Gundam Tanpenshuu
MS戦記 機動戦士ガンダム短編集
manga

Frederick F. Brown is a mobile suit trainee in one of Zeon's schools, but always had a hard time keeping up with everyone. Ten months after training hard, he's thrust into actual combat for the first time together with Zeon's declaration of war. He becomes witness to the horrors and atrocities associated with war first hand as he fights to stay alive.

Sequel

Mobile Suit Gundam: The Revival of Zeon
Kidou Senshi Gundam Shin Zeon no Saiko· 機動戦士ガンダム 新ジオンの再興
manga

Sequel

Mobile Suit Gundam: Char's Counterattack - Beltorchika's Children
Kidou Senshi Gundam: Gyakushuu no Char - Beltorchika's Children· 機動戦士ガンダム 逆襲のシャア ベルトーチカ・チルドレン
manga

In U.C. 0093, Char Aznable returns as leader of Neo Zeon, and is determined to drop the asteroid base Axis on Earth. Opposing him is the task-force Londo Bell, led by Amuro Ray and his Gundam. The final battle will take place over the Earth Sphere. (Source: Gundam Wikia)

Side Story

Mobile Suit Gundam: The Revival of Zeon - Remnant One
Kidou Senshi Gundam: Zeon no Saiko - Remnant One· 機動戦士ガンダム・ジオンの再・レムナント・レムナント
manga

In U.C. 0092 the "Cerberus Squadron," is tasked with capturing 5th Luna