How many soldiers died in the battle of tannenburg 1914?

On the Allied side there were : 508,800 dead, wounded, missing, or captured. On the side of the Central Powers there were: 348,300 dead, wounded, missing, or captured.

51,112 casualties (23,049 Union and 28,063 Confederate) - that includes dead, wounded, and missing. Actual dead is believed to be around 7000.

800'000

Over 6000 Persians. The Athenians lost 192 men and the Plataeans 11

None. It was a naval battle.