The eternal battlefield.
In Pugnae the plane of war the day and night come and go, the seasons change but the battle never settles. Even when the Devils and Demons retreat the denizens of the plane fight amongst themselves.
The image of a blasted hill and plains littered with corpses is what remains in the mind of the visitor. Right before an arrow, axe or a force missile passes through their skull.
The plane is neutral and welcomes all. When someone dies in Pugnae they return in the place of their death after 1d4 days(as if affected by a true resurrection spell cast by a lvl 20 cleric).
People that die of old age in Pugnae are sent to the halls of torture and are punished as cowards.