4 days before operation Compass "5 day raid" the 4th Indian Division was promised to the commanders operating against Italian East Africa, to move there starting mid December.
13 April 1939 Britain Greece treaty where Britain will aid Greece if it is attacked.
28 October 1940 Italy attacks Greece
9 December 1940 Operation Compass, 4th Indian, 7th Armoured and Corps troops
11 December most of 4th Indian ordered withdrawn, when leaving it takes corps artillery with it, which is ordered to return
19 December first elements of 6th Australian Division arrive, final elements on 27 December, (The New Zealand Division was deemed unavailable until completed, the Australians could put 3 infantry brigades together with some heavy weapons and call it a division)
3 January 1941 Bardia attacked
10 January HMS Illustrious attacked by Luftwaffe
19 January East African offensive begins, 4th and 5th Indian divisions
21 January Tobruk attacked
2 February conference in Greece between commanders begins. 1 Greek division in reserve, 2 if returning casualties could be speeded up.
5 February road block established at Beda Fomm
6 February Benghazi falls.
7 February final trapped Italians surrender.
14 February first German troops arrive in Tripoli
During February Luftwaffe raids on Benghazi curtail to stop British supplies being offloaded, Tobruk is used. While one factor of the Western Desert deployments is available troop numbers, another is supply problems. 7th Armoured division returned to Egypt with 12 cruiser and 40 light tanks, all needing workshop overhaul. 2nd Armoured division arrived at the front with its tanks needing new tracks. Replacements rushed from Australia did not stand up well enough. 3rd Armoured brigade had 86 instead of the authorised 156 tanks including radioless Italian M13. XIII corps staff, the ones in charge of operation Compass, were dispersed to other units as needed.
By the way, think of the Italian force deployed against Greece in the western desert as a blocking force.
5 March first troops embark for Greece
8 March first troops disembark in Greece
24 March Admiral Cunningham is asked by the Admiralty about plans for evacuating troops from Greece.
26 March Yugoslav coup.
27 March, 1st Armoured Brigade, almost all the new Zealand Division and 1 Brigade of Australians in Greece.
2 April Rommel's forces enter Agedabia, quick end of plans for 7th Australian Division and Polish Brigade to go to Greece.
4 April 1.5 Commonwealth divisions in Greece plus supporting troops, more still arriving
6 April German attack in Balkans,
When it comes to holding Singapore maps say you need to hold Northern Malaya/Southern Thailand as well as Sumatra/Java, otherwise the supply lines are cut, Thailand was not going to fight Japan (and probably Britain as well if operation Matador had occurred), the Dutch had few defences in the East Indies. By deciding the Japanese were inferior and the IJN would be often pulled into the Pacific the defence of Singapore was assumed possible, along with continuing unchanged pre war plans.
In a Singapore siege situation you needed to hold parts of the mainland for the water supply and feed about 560,000 civilians living on 225 square miles, Malta had 240,000 civilians living on 95 (Malta) / 122 (Malta plus Gozo) square miles
Canada Hurricane I production, Sea and mark II production began in November 1941.
Feb-40 1
Mar-40 4
Apr-40 4
May-40 9
Jun-40 10
Jul-40 11
Aug-40 1
Sep-40 1
Oct-40 7
Nov-40 13
Dec-40 15
Jan-41 35
Feb-41 46
Mar-41 66
Apr-41 58
May-41 72
Jun-41 59
Jul-41 62
Aug-41 11
Sep-41
Oct-41 1
All Canadian built Hurricanes either retained in Canada or shipped to Britain to be fitted with engines and other parts.