Base Affairs Chapter a five page comic chapter at the end of volume 6 GATE the JSDF fought there, Manga.

Plot

page 1 a map seen on other chapters. Page 2 title page and LATE NITE SIREN. Page 3 MMARCH !! and FORBIDDEN ART. Page 4 THE MILITARY POLICE SAW! and CHEF @ AKUSHO. Page 5 BRIDGE TOO FAR and TRANSFER PLAN.

Source

http://kissmanga.com/Manga/Gate-Jietai-Kare-no-Chi-nite-Kaku-Tatakeri/Vol-006-Ch-041-005--Marutto-Gate--Base-Affairs-Chapter?id=243491#1 through page 5.