In the spirit of those "how badly would the Germans suffer if they attempted Sealion" threads, I ask this question. For whatever reason, let's say that either the Germans avoid the Battle of Crete or manage to pull it off with relatively few casualties, leading Hitler to issue the green light on an airborne assault against Malta. What sort of projected casualties are we looking at in such an event?
When though? If you mean operation Herkules (
http://en.wikipedia.org/wiki/Operation_Herkules)
then it would be in 1942 after Malta had recovered from existing in a state of precarious survival in 1940-1, but the Axis could still achieve air supremacy and bomb the island at will with enough commitment of airpower, which any invasion would be guaranteed.
The Axis had a major advantage in that aircraft were 90 miles from Malta in Sicily and could launch 4 sortees a day for transports and probably more for fighters/bombers. The Axis had two airborne divisions, one German one Italian, plus Italian marines and naval commandos, beach assault tanks, local naval superiority, which means naval fire support, and control of the air, plus total awareness of island defenses. The Germans had worked with the Italians to develop special landing craft, which gave the proper naval assault capabilities.
I think the Axis could have pulled it off with fewer losses than the Crete invasion. Probably less than 5000 IMHO.
But also without Crete the invasion of Malta could occur in 1941 when Malta was less well defended and pretty well suppress by Axis airpower. So that would be even more favorable even without Italian paratroopers. Then loss would probably be no more than 4000 if that.
And we get butterflies related to Africa too. Assuming Herkules happens in 1942, then Rommel doesn't invade Egypt, because Axis airpower is needed to support the Malta invasion.
If the invasion is in 1941 then by 1942 Rommel still invades Egypt, but without the threat of Malta interdicting his supplies. Its difficult to say exactly how much more would get through, but it would not be enough for Rommel to win in Egypt. Still, he would have a much better time handling the Allied counter attack, as much more would get through to him supply-wise and the Axis could/would put up a better fight in Africa in 1943.