"Now we know why Starships use boring old impulse..." Topic

… drives near planets…

"Planning a little space travel to see some friends on Kepler 22b? Thinking of trying out your newly-installed FTL3000 Alcubierre Warp Drive to get you there in no time? Better not make it a surprise visit — your arrival may end up disintegrating anyone there when you show up.

"Warp" technology and faster-than-light (FTL) space travel has been a staple of science fiction for decades. The distances in space are just so vast and planetary systems — even within a single galaxy — are spaced so far apart, such a concept is needed to make casual human exploration feasible (and fit within the comforts of people's imagination as well… nobody wants to think about Kirk and Spock bravely going to some alien planet while everyone they've ever known dies of old age!)

While many factors involving FTL travel are purely theoretical — and may remain in the realm of imagination for a very long time, if not ever — there are some concepts that play well with currently-accepted physics…"
From here
link

Amicalement
Armand

Warp bombardment cruise missiles.

SPace battle, 2 ships warp towards each other and hope their wave cancels the enemies and then destroys him. No fighters, lasers, mass drivers, anything needed just an engine and lots and lots of shielding and armour.

Andre Norton envisioned something like this in her novels regarding space combat.