Strategy is a system of expedients... It is the art of acting under pressure of the most difficult conditions.

Helmuth von Moltke

Helmuth von Moltke, in full Helmuth Karl Bernhard, Count (graf) von Moltke, (born October 26, 1800, Parchim, Mecklenburg [Germany]—died April 24, 1891, Berlin, Germany), chief of the Prussian and German General Staff (1858–88) and the architect of the victories over Denmark (1864), Austria (1866), and France (1871). Britannica