Chapter 74 of the Manga of Gate-thus the JSDF Fought There. Manga Volume 12? [First moves in the raid on the Imperial Capital]
Plot[]
Page 1 introductory art see right. Page 7 right shows dark elves planting beckon for a JSDF mortar emplacement.
Source[]
Pagination follows this English Translation of the Japanese Manga: https://mangapark.me/manga/gate-jietai-kare-no-chi-nite-kaku-tatakeri/s1/c074/1