Long time no see Rodger!
Hitler's penchant for "dabbling" was well-established by the start of the war - Halder's diary reports for instance that UNLIKE the planning meetings for Poland and France, Hitler sat very quiet and distracted at the Sealion meetings in August and September 1940....and as we know, his tendency to dabble was reinforced by the apparent overwhelming success he then enjoyed!
Up to the point that by 1943/44 he was micromanaging the war, particularly in the East.
Churchill's was different - he had been a war-fighting Cabinet Minister in WWI, up until Gallipoli - then an infantry officer ion the Western front for 18 months before returning to the government. So he was relatively
well-experienced at command-level decisionmaking AND tactical command in the field.
What most people forget, however - is that for MOST of WWII as well as being Prime Minister he ALSO retained for himself the office of Minister for War.
Normally, the UK divides these two roles - unlike in the U.S.A. where the officer of Commander-In-Chief is embodied in the President
But holding the two portfolios allowed Churchill to dabble "legally".
But very much like Hitler - his real ability
to do so, to win arguments over Chiefs of Staff etc. who disagreed with him - depended in his success rate. And in military terms that "success" rate is measured not only by deeds....but also by words
For example....by the time Crete was invaded, Churchill had JUST rammed a few decisions through the CIGS - and thankfully successfully; he had ordered the Royal Navy into the port of Tripoli successfully, against the protests of Cunningham....and ordered the TIGER convoy through the Med despite the Admiralty's protestations. BOTH of these were notable successes....and would normally have bolstered his abilty to force MORE his way...but he THEN dented his standing in the constantly-shifting dynamic balance between him and his Staff Chiefs by ordering Wavell to use the tanks on board TIGER to start the ultimately-unsuccessful BATTLEAXE....
....and thus by the time of Crete, Wavell could bullshit him about being able to send tanks to the island, while the RAF OC in the Middle East refused Churchill's demands time and again to send more fighters to the island.
If Churchill had had the incredible two and a half years' of unprecedented sucess that Hitler had - his position would
have been unassailable and he COULD have micromanged the entire war. But the reason the Winston-CIGS balance was always
dynamic and shifting was that he came INTO power as a result of the disastrous campaign in Norway that HE had had such a role in causing!
So he started
his time as "Comander-In-Chief" at a disadvantage to them - and his hold over the military commanders went up and down like a sine curve after
that - dependent on who had recently seemed
the more "right"!