Please make the following text more consistent.
Whereas at some times (and in some places) a Corps of two divisions was sufficient, at other times 5 or 6 divisions were necessary. Under the Hindenburg regime (from summer 1916), new Corps headquarters were created without organic divisions.
Whereas at some times (and in some places) a Corps of two divisions was sufficient, at other times 5 or 6 divisions were necessary. Therefore, under the Hindenburg regime (from summer 1916), new Corps headquarters were created without organic divisions.