It's another short-form anime based on a four-panel gag manga. Souhei Yano is a high school student who finds himself being protected by army girls who destroy everything with guns, bazookas, tanks, grenades, etc. The cast spend several episodes living with Souhei's neighbour because the girls flattened his house.
It's fun. Not a big deal, but fun. It's got lots of comic energy and girls behaving badly with guns, so at least it's watchable on that basic level. I have trouble imagining anyone going crazy for the show, though. Even at that micro-length, you might flag slightly at some point if you try to blast through the whole thing in one sitting. Only one or two of the characters go beyond the standard base level, i.e. comedy mayhem machines with a bit of fanservice. You watch an episode and either go "that didn't really work, but it's only three minutes" or "that was quite funny, but it's only three minutes".
The premise, by the way, is that Souhei's dad made a mistake in his paperwork on arriving in the Russian-speaking country of Krakozhia and was thus forced to join the army and fight as a mercenary. The country of Grania is now trying to kill his family. If this weren't a frenetic comedy gag show, that would be terrifying. Fortunately though Souhei's dad has enough pull to send him some bodyguards! These include:
1. Lieutenant Lutgalnikov (purple hair, Remington Model 870 pump action shotgun, M20 "Super Bazooka", T-34 Russian tank). Manic.
2. Second Lieutenant Haruka (blue hair, Remington Model 700 Sniper Rifle, M67 grenades). Slightly less manic, shows her underwear a lot. She and Lutgalnikov are functionally a single character, where the joke is that they're bodyguards who love shooting things and starting fights but never actually do any bodyguarding. If an assassin shows up, they'll do nothing because they're playing a computer game or are getting nice and warm under a kotatsu.
3. Colonel Aria (blonde pigtails, buxom, mostly used for fanservice). Behaves like a harem character. Ultimate fanservice provided in ep.7.
These characters are fine. They have some good jokes, but I preferred their enemies.
4. Sergeant Shakirov (blonde ringlets, two 5.56 Microguns). She's my favourite character in the show. She's an assassin sent to kill Souhei, but she's also super-lazy, squeamish and an airhead. Her reactions to anything will be sort of dreamy and delayed-reaction.
5. Grue (helicopter pilot, male). His superior is Shakirov and he ends up being, literally, her dog. He lives in a kennel and eats from a dog bowl.
Oh, and there's also Souhei's neighbour, Yukari Mizuno, who lets everyone live with her for a while and can be summed up as "a nice lady". She's okay too. All this is silly and fun. The girls' utter lack of restraint or self-control is a laugh, although of course no one dies. That's even true when when a big army bloke in ep.4 gets shot down in his helicopter and then hit by two tank shells simultaneously. He's not just caught in the explosion. They specifically hit him... but he's back again the following episode.
There's also fanservice. It hardly seems worth mentioning since the art is flat and cartoonish even for anime, but it's so blatant that it's a very prominent element of the show. This show has three kinds of character: (a) probably about ten years old and showing their panties a lot, (b) about twice the height with big boobs, (c) male.
Lutgalnikov and Haruka are type (a), while Aria and Yukari are type (b). Haruka's panty shots in particular are so prominent that one wonders why she bothers with a skirt at all. Come to think of it, why is everyone here wearing short skirts rather than trousers? When you're leaping through a window firing twin machine-guns, a skirt like that might as well be a belt. I notice that I haven't discussed Souhei yet, incidentally, but that's because it's hard to remember that he exists. Technically this is a harem anime, although only Aria seems to have realised. A bland male is living with lots of girls with over-the-top personalities. Souhei is thus bland by genre convention and then made even less conspicuous by being almost invisible amid the mayhem.
There's no realism here, obviously. It's silly fun. You're not meant to think about it, or consider anything like consequences or what would really happen. I quite liked ep.2 (Shakirov comedy), ep.3 (kotatsu ridiculousness) and ep.10 (Grue's life as a dog). The situation's funny. You may or may not have a problem with the panty shots from wildly underage characters, though. The show doesn't really add up to anything and I don't know if I'd recommend it, but it's frenetic, moderately memorable and has a few good jokes.