Fecl3+h2s- fecl2+2hcl+s oxidation and reduction

H2S is a reducing agent, FeCl3 is an oxidizing agent.

Explanation:

It's the oxidation and reduction.

alfred von schlieffen, german army chief of staff, was given instructions to devise a strategy that would be able to counter a joint attack. in december, 1905, he began circulating what later became known as the schlieffen plan. schlieffen argued that if war took place it was vital that france was speedily defeated.