This is a relatively simple what-if. The British sent three Glen class transports to the Mediterrainian in early 1941 to support the landing of Layforce on Rhodes in conjunction with their reinforcing Greece. Layforce itself was four battalions of commandos. Additional troops would have backed this force in a landing to take the island of Rhodes from the Italians. The British called off the operation in part because of the situation deteoriating in Greece. But, what if they hadn't? The Germans and Italians couldn't have reinforced Rhodes at that point and the Island had one mediocre quality Italian binary infantry division (the 50th) on it for defense. Given what we know of similar Italian unit's performance elsewhere during the war the British would have virtually certainly taken the island. Let's assume they do. The question now becomes how does this effect events in the Med? I would postulate that both the Germans and Italians would have made retaking Rhodes a priority to taking Crete at the end of the Greek campaign. The Italians would want to recover their lost real estate while the Germans would want it retaken to prevent its use as an eventual base for air operations. If this is indeed the case, the only choice either has is to use 7th Fallschirmjäger there instead of Crete. I would think Rhodes would fall after a fight much like Crete did but probably with less German casualties. The problem here is that in using the 7th FJ for this operation Crete would be delayed sufficently that it wouldn't fall to a German drop there a few months later than the historical one. This would have left Crete in British hands and them in a much better position to control the Eastern Med.