German "strategy" certainly helped. Had they kept Hitler's egomaniacal lust to crush Stalingrad itself at bay and instead simply encircled Stalingrad to cut of

German "strategy" certainly helped. Had they kept Hitler's egomaniacal lust to crush Stalingrad itself at bay and instead simply encircled Stalingrad to cut off its supplies and proceed to take the Caucasus oil fields instead, the whole war could have turned differently.