What's with the the insult-the-OP? Not kind. Yeah, the Altmer can and have always been great warriors, if weird ones. Especially at sea, including the seas of Oblivion.
Yh. Even in the war between the Aldmeri Dominion V's the Empire, I believe the AD had the superior navy. The Imperial armies only turned the war around when on the ground during land battles in Cyrodiil.
I guess it depends if the OP was using warrior to mean melee style combat of metal forged weapons or just meant a race who is able in war.
Altmer are obviously a successful race in war as they walked into Valenwood, then took southern Hammerfell and nearly managed to cripple the armies of the Empire. The difference is that Altmer specialise in the use of magic for warfare. Flaming fire balls or lightning bolts & magic shields.
Then they have the Bosmer of the Aldmeri Dominion to supply archers as support (obviously dressed in Elven armor as opposed to specialising shield magic). Archers are again a great addition for naval warfare