Weary Of Battle

Riddle: I'm by nature solitary, scarred by spear and wounded by sword, weary of battle. I frequently see the face of war, and fight hateful enemies; yet I hold no hope of help being brought to me in the battle, before I'm eventually done to death. In the stronghold of the city sharp-edged swords, skilfully forged in the flame by smiths, bite deeply into me. I can but await a more fearsome encounter; it is not for me to discover in the city any of those doctors who heal grievous wounds with roots and herbs. The scars from sword wounds gape wider and wider; death blows are dealt to me by day and by night. What am I?