“If Paulus's army had capitulated before the end, the Russians would have had the advantage of withdrawing forces against Paulus and against the southern front, where I had only two Romanian armies. Therefore, the resistance of the Sixth German Army, even to the death of the last man, was necessary.”

Referring to Allied Intervention in the Russian Civil War Tim Buck A Conscience for Canada

Speech in the House of Commons, August 2, 1944.
The Second World War (1939–1945)
Source: [Churchill, Winston, The Dawn of Liberation, 1945, Rosetta Books, 2013, 9780795329494]

The 1930s
Source: Letter to G. M. Trevelyan (3 January 1935), quoted in Martin Gilbert, Prophet of Truth: Winston S. Churchill, 1922–1939 (London: Minerva, 1990), p. 623

Radio message to Adolf Hitler, January 31, 1943. Quoted in "The Rise and Fall of the Third Reich: A History of Nazi Germany" - Page 931 - by William Lawrence Shirer - Germany - 1990

In a message to General Paulus https://www.historyplace.com/worldwar2/defeat/catastrophe-stalingrad.htm, 24 January 1943 <br class="br">1940s

Guerrilla Warfare (1960)

Hermann Göring, to Leon Goldensohn, May 24, 1946

Speech in Parliament (January 15, 1855), reported in Hansard's Parliamentary Debates, Third Series, vol. cxxxviii. p. 2077; this can be contrasted witho Sydney Smith's statement "The officer and the office, the doer and the thing done, seldom fit so exactly that we can say they were almost made for each other" in Sketches of Moral Philosophy (1806).

Variant translation: Two armies that fight each other is like one large army that commits suicide.
Under Fire (1916), Ch. 1 - The Vision