I learnt the true meaning of what was euphemistically described as close-quarters combat.

No line-of-sight particle-beam weapons now; no delayed-detonation nano-munitions. What close-quarters combat meant was something which would have been infinitely more recognisable to a soldier of a thousand years earlier: the screaming fury of human beings packed so close together that the only effective way to kill each other was with sharpened metal weapons: bayonets and daggers, or with hands around each other’s throats; fingers pressed into each other’s eye-sockets.

The only way to survive was to disengage all higher brain-functions and regress to an animal state of mind.

So I did…

Chasm City (pg 108)
Alastair Reynolds