Was the Assassination of Reinhard Heydrich Worth It?

[Seamus Fermanagh]

Heydrich living may have spared a few thousand men and a few dozen man hours from anti partisan activity. The ability of one man to affect institutions are overblown in this thread.

You are correct. Had Heydrich lived he would likely have gone on to cause fits for The Maquis after pacifying Czechoslovakia...but could not have materially changed the outcome of the war, nor even delayed the conclusion significantly.

Mers-El-Kebir , Dontiz being denied his U boats, and repulsion from Moscow are the watershed moments in the second World War. I suppose you could add midway but probably not.

You have identified less "obvious" turning points than those typically cited (Battle of Britain, El Alamein, Stalingrad. D-Day) and I like the tone you set with that. Each of the decisions/actions you cite lead to or embodied a watershed moment when something that had truly war-changing results attached to it.

For the Pacific, Midway would not fit. Even before Midway, there was no possibility of the Japanese winning the war. I'd note Pearl Harbor as the crux event. Surprise attack character led to remorselessness on USA (thus undercutting the hope of winning via war weariness) and AH declared war thus completing the Anglo-US alliance effort of which Mers-el-Kebir had been an important component.