From Tokyopop:
The One Year War between the Earth Federation and the Principality of Zeon has begun--and the newest Mobile Suits are tested for battle!
Captain Matt Healy leads his team into dangerous territory as the leader of a Special Forces Experimental Unit. Ken Bederstadt is a Foreign Legion Lieutenant working in alliance with Zeon. These two heroes are trying to keep everyone alive... for tomorrow!
Notes: There are two editions of this manga, the 2003 edition (same as Tokyopop version) and 2005 "complete" edition with two additional chapters - a prequel and a conclusion to the storyline.
A new edition of the manga was also released as Kidou Senshi Gundam Senki Rebelion - Lost War Chronicles in 2014.
2 Volumes 2002 (Complete)
2 Volumes 2005 (Kanzenban)





