The British Commonwealth ground forces December 1941
Over 2 years of war against the Germans have forced a lot of changes upon the British Army and its offshoots. For the first year severe shortages in equipment and arms along with staggering losses of both in France, Greece and North Africa have been a serious drag on its training, efficiency and expansion. However Lend Lease and massive expansions in production of home have finally ended that problem. Just as importantly, the entry of the United States and Soviet Union into the war has ended the threat (such as it was) of German Invasion of the British Isles, and thus has allowed the release of troops for service overseas and return of a the veteran Indian and ANZAC formations home to provide cadres for expanded armies for India and Australia, and expanded force structure for New Zealand as well. Unfortunately the Japanese invasion of Malaya and Burma comes at a time when the Australians and Indians are least prepared for it, as the bulk of their divisions are not combat ready as the veteran units have been stripped of around 65% of their veteran troops to provide cadres for new divisions and those men have been replaced by barely trained recruits. Equipment too is in short supply as shipping shortages and other priorities have meant that new vehicles and arms have been slow to reach Australia, New Zealand and India due to the long distances from Britain and lack of direct (initially) Lend Lease from North America to those Commonwealth nations.
Much of the British Army is in transit in late 1941 as there is a serious concern that the Soviets will collapse and a German invasion of the Mideast (and possible Turkish intervention with them) is possible.
British Army deployment December 1941
Mideast Command (Brooke)
Western Desert 8th Army (Montgomery)
1st Armored Division* 7th Armored Division* 10th Armored Division*, 1st South African Infantry Division, 2nd South African Infantry Division, 2nd UK Infantry Division, 18th Infantry Division, 70th Infantry Division,
Egypt/Syria/Lebanon/Palestine/Jordan/Iraq 9th Army (Wilson)
1st Infantry Division, 3rd Infantry Division, 4th Infantry Division, 5th Infantry Division, 8th Armored Division* (consists of the worst damaged units from the 1st,7th, and 10th Armored Divisions), 8th Infantry Division (consists of the worst mauled units of the 2nd, 18th and 70th Infantry Divisions)
all four of the infantry divisions arrived between October and the end of December and not all of their heavy weapons or vehicles have arrived yet. For now they are handling security along with an infantry brigade in Cyprus and the 4th New Zealand Infantry Brigade (volunteers from 2nd NZ Division)
En route
15th Infantry Division (Scottish) en route (slated for Iraq)
Home forces
11th Armored Division (preparing for deployment to Mideast), Guards Armored Division (preparing for deployment to Mideast), 7th Infantry Division, 43rd (Wessex) Infantry Division **, 44th (Home Counties) Infantry Division**, 46th Infantry Division, 48th (Midland) Infantry Division**, 49th (West Riding) Infantry Division**, 50th (Northhumbrian) Infantry Division**, 51st (Highland) Infantry Division, 52nd (Lowland) Infantry Division, 53rd (Wessex) Infantry Division**, 78th Infantry Division (preparing for shipment to Middle East).
Plus Malta Brigade Group (essentially a division in size), Gibraltar garrison, and various infantry divisions that are actually training units.
Plus Canadian 1st, 2nd, 3rd Infantry Divisions and the 4th and 5th Canadian Divisions will be deployed when ready
*Refitting and not ready for offensive operations
**A brigade has been stripped from each and is en route or preparing to leave for India to provide British infantry brigades for Indian Divisions in training or forming.
India/Persia/Burma Command (Auchinleck)
Burma
17th Indian Infantry Division*, 1st Burma Infantry Division*
the Japanese have inflicted series losses on all 5 divisions in the opening stages of the campaign and the 11th Indian faced real danger of disintegration and having to be completely reorganized (although that time is unlikely).
Persia Garrison
4th Indian Infantry Division*, 5th Indian Infantry Division*, 6th Indian Infantry Division*, 14th Indian Infantry Division (available for redeployment, awaiting transport), 31st Indian Armored Division (equipped with obsolete vehicles)
en route to India
8th Indian Infantry Division, 10th Indian Infantry Division (moving into strategic reserve in India having recently been transferred from Persia)
Northwest Frontier
7th Indian Infantry Division, 32nd Cavalry Division (formerly armored but lack of tanks sees it being reconverted back to its original role as a horse cavalry division)
forming (training status, have a cadre from the 4th, 5th or 6th Indian Division, plus will gain a brigade each of British troops en route from Britain with the remainder consisting of new recruits. None are combat ready lacking equipment, with the bulk of their troops still learning there jobs and lacking the British component which is en route. None will be ready for a few months for anything except line of communications or security duty).
19Th, 20th, 23rd, 25th, 26th, 34th, 36th Indian Infantry Divisions
43rd Infantry and 44th Armored Division are both at even an earlier stage of formation consisting of a few headquarters staff
Southwest Pacific Command (Wavell)
Malaya
9th Indian Infantry Division, 11th Indian Infantry Division*, 4th Australian Infantry Division*
Rabaul
Lark Force (a reinforced battalion group)
Port Moresby
30th Australian Infantry Brigade
Darwin
19th Australian Brigade Group
en route home
6th, 7th, 9th Australian Imperial Force Divisions (less heavy equipment)
2nd New Zealand Division (less heavy equipment and 1 brigad
training (all Australian)
1st Armored Division, 1st Cavalry Division, 2nd Cavalry Division, 1st, 2nd, 3rd, 4th 5th Infantry Divisions,
New Zealand home defense (Freyburg)
1st, 3rd, 4th, 5th Divisions
Subsaharan Africa (Cunningham)
11th and 12th African Infantry Divisions plus 3rd South African Infantry Divisions and assorted smaller garrison formations