Throughout the history of the Forgotten Realms, armies have clashed on countless occasions and blood has been spilt virtually everywhere across the globe. These are the more notable conflicts.
Crown Wars (c. -12000 to -9000 DR) 
OverviewFirst Crown WarSecond Crown WarThird Crown WarFourth Crown WarFifth Crown War
A series of wars between the elves spanning around 3000 years.
Goblin War (1370—1371 DR) 
In which the orcs and goblins of Nalavarauthatoryl attacked Cormyr.
Weeping War (711—714 DR) 
In which the elves of Myth Drannor fell to the demonic army of the Trio Nefarious.