That dude 2 steps below certainly has some kind of a problem with Reality™ where people are many-faced, and fails to even understand the very psychological basics like soldiers being taught to and naturally inclining to laugh off military actions when they can and not think too deeply about it in order to save their psyche from the grim realization of killing dozens of people just like that.
Anyway, as if it isn't clear, the author is actually a real JSDF soldier, duh. And the military stuff here is shown at least somewhat realistic, brushing aside all fantasy elements and lenience towards MC and Co°.
Yeah, it's a healthy nationalistic praise of one's military forces, no shit. Too bad a lot of western minds are not capable of comprehending that loving one's nation and being patriotic doesn't mean being a warmonger genocide-raging ax-crazy bloody men.
@wakanana got the gist of it pretty good.
It's trully saddening that the are quite a number of people out there thinking about this series along the lines of "Ah, those poor Japs, they can't match any military on Earth, so they have to create medieval isekai so that they could use their nationalistic racist ego at least somewhere!" Tsk-tsk, some people could use some basic physical conditioning and discipline in their lives.
If you want to actually criticize this series then say things like "Erm, so why didn't they launch a satellite in the fist few months or so? It would take them a camera with a kilo iron ball, and a compass to get basically all the info about the planet's gravity forces they could need to calculate reaching orbit." Or "So, why didn't they brought plane parts through the gate and didn't circumnavigate the planet or at least the continent like any normal modern nation would do with uncharted lands?"