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World war ii North Africa, Mediterranean & Atlantic

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1 World war ii North Africa, Mediterranean & Atlantic 1941-1945
Sea Power & Maritime Affairs Lesson 11 World war ii North Africa, Mediterranean & Atlantic

2 Admin Anything you want to include Quizzes Assignments Etc

3 Last Class Navy during Inter-War Period (1918-1939)
Treaty of Versailles State of world navies Naval Arms Limitations Washington Conferences Birth of new technologies Aircraft carrier

4 Today WWII in the Africa, Med, Atlantic Causes of war
Navies in Atlantic, Africa & Med US navy involvement End of war in Europe

5 8 Key Themes Navy as an instrument of foreign policy
Interaction between Congress and Navy Interservice relations Technology Leadership Strategy & Tactics Evolution of US Naval Doctrine Future missions of Navy and USMC

6 Sea Power & Maritime Affairs
Lesson 13 WWII Naval War in Europe

7 Why study separately? Battle for the Atlantic Battle for the Pacific

8 Allied Navy Roles in European War
Convoy Escort Supply protection Anti-submarine warfare Troop Transport Dunkirk evacuation Amphibious Assault execution Navy surface gunfire support Naval aircraft support Random surface engagements Battleships, cruisers, carrier Air superiority

9 Axis Navy Roles in European War
Supply-Chain Destruction “Surface Raiders” U-Boats (submarines) Troop Transport Plans for Britain Northern Africa Random surface engagements - Battleships, cruisers, carrier Air superiority

10 Warning of Impending War
Germany Japan - Extremism - Repudiates Treaty of Versailles - Military development Military Mobilization Rhineland Austria Sudetenland Czechoslovakia Extremism Military development Military Mobilization China South-east Asia

11 Phase I Territorial Gains
1936 1939 Rhineland Czechoslovakia Poland 1937 1940 Nothing Denmark Norway Holland Belgium France Britain (Failure) Soviet Union 1938 Austrian “Anschluss” Sudetenland

12 Germany Post WWI

13 Rhineland

14 “Anschluss” (Austria) 1938

15 Sudetenland

16 Czechoslovakia

17 Poland Sept 1, 1939 * Official Start of War / UK, France declare War

18 Start of War in Europe Germany & USSR invade Poland
UK and France declare war Germany declares war Italy declares war During French invasion US : Neutral

19 Initial Allied Naval Strategy Initial German Naval Strategy
What about the Navy? Initial Allied Naval Strategy Initial German Naval Strategy Big Picture Prevent German fleet from getting into Atlantic Preserve control of seas Supply Troop movement ** Combined British and French fleets made largest fleet in the world. Confident they could control the seas. Big Picture Control of seas Supply Troop movement Cripple Allied supply Convoy Surface “Raiders” Submarines “Wolf packs” Air superiority

20 Initial Allied Warfare Initial German Warfare
What about the Navy? Initial Allied Warfare Initial German Warfare WWI-style Blockade Mine laying Convoys Royal Air Force WWI-style Submarine warfare Luftwaffe NEW TECHNOLOGY: Aircraft Carriers

21 Denmark & Norway Apr 1940

22 Holland May 10-15, 1940

23 Belgium May 28, 1940

24 “Miracle” of Dunkirk - Allies enveloped Hope: Rescue 45,000
Actual: 338,000 rescued Reason: Army holds back Germans 9 Days British Navy and merchantmen combine efforts

25

26 France on Verge of Defeat
Armistice: 22 June 1940 Create “Vichy France” Brits start seizing French ships Strategic Implications No western threat British blockade ineffective Britain all alone French plead for British Support Brits plead for France to release their fleet *Neither side agrees

27 France Armistice June 22, 1940

28 How are the Allies Doing?
Poorly Only Brits left Remnants of Army Combined Fleet split in half German Empire enormous and growing Men & military resources British supply dwindling Italy now at war with Britain Mediterranean

29 You are Hitler What do you do next?

30 “Operation Sea Lion” August 1940
Battle of Britain “Operation Sea Lion” August 1940

31 Hitler’s Next Target Wants to defeat Britain Plan: Amphibious Assault
Army and Navy dispute over where to land Both agree: Must control air first German Luftwaffe begins bombing campaign and the Battle of Britain begins

32 You are Churchill What do you do?

33 Battle of Britain Video

34 British Strategy & Tactics
Enormous resources into Royal Air Force British Advantage 1. English channel Move fleet from Scapa Flow 2. Logistics 3. Advanced Warning Radar More important: “Ultra” – German message coding

35 Does Germany Win? Long Answer No
Short Answer Long Answer No No, Because 1. Brits exploit their advantage a. Losses: (Britain) 915 fighters (Germany) 1733 aircraft 2. Germans get distracted a. Bomb cities rather than airfields and radar installations b. Divert attention to invading USSR and saving Italians in North Africa

36 “Neutrality” Supply, Supply, Supply Ready the Troops
Early American Role “Neutrality” Supply, Supply, Supply Ready the Troops

37 Early American Role Supposed “Neutrality”
FDR: American interest in defeating fascism Diplomacy: “Equal opportunity for American goods” Reality: “Preserve UK through material support”

38 Early American Role 1. Loan 50 WWI Destroyers to Britain
2. Lend Lease (March 1941) to Britain (later USSR) “Neutrality Patrols” - In response to several incidents with Germans inspecting or sinking US merchant ships 4. Destroyer escort as far as Iceland Unofficial convoy escort Dangerous life for “non-combatant” sailors 5. Escort in and out of British ports

39 German War on Supply 1. Brits assumed “Unrestricted Sub Warfare”
Brits arm merchant vessels Germans remove submarine restrictions Germans increase submarine war - Hone “Wolf-pack” tactics Problem: Brits mined English Channel. North sea is only option. But subs use too much fuel going through North Sea.

40 Wolf-pack Tactics 1. Surface sighting 2. Relay to headquarters
Assign of pack Trail and study Multi-angle attack at night * Prefer independent ship **”Greenland Air Gap”

41 German War on Supply Big Events: Norway, France (50% time save)

42

43 Total Numbers 2,775 Allied merchants sunk
1,175 U-Boats committed / 781 lost “The Cruel Sea” – Nicholas Monsarrat

44 How were the U-Boats Defeated?
Convoys More convoy boats Different types of convoy boats Corvettes & frigates Longer escorts Air escort Technology More accurate surface radar More accurate asdic (sonar) Better depth charges Cryptology Brits crack German Navy’s “Ultra” cipher (Twice)

45 How were the U-Boats Defeated?
For the US Air coverage : 300 anti-sub planes “Black Out” at night Interlocking convoy hand-off “Hunter-Killer Groups” Final reason: Sinking more U-Boats than Germany could build - Ratio of 3:1 (Merchants:U-Boats sank) - Escorts and aircraft each account for 50% Bottom Line: War on supply became too costly for Germans

46 Navy’s Other Roles Troop Transport

47 Historical Context Oct 1940: Germany attacks USSR
Dec 1941: US enters war (joins Britain & USSR) * Allied Quandary: How to defeat Germany?

48 Europe in 1942 Where would you begin?

49 Europe in 1942 Close in from all sides

50 Conflicting Plans Soviets want western front
Take pressure off them British want to start in Africa Avoid catastrophic defeat and stalemate of WWI US “Germany-First” Plan Planners fear starting in Africa will delay western invasion until 1944 and USSR will not last until then Planners also want more time to build and train Amphibious landing vehicles *What do we do?

51 Navy Facilitates Amphibious Assaults
The Big Four: North Africa – “Torch” Sicily – “Husky” Italy – “Avalanche” and “Shingle” France – “Neptune” and “Overlord” * Grand strategy: Work into Europe from the south (knock out Italy) while preparing for assault on France’s western coast. Combine these assaults with USSR from east.

52 Navy Transport Instrumental
Enormous success transporting troops 28 KTS Amphibious landings more deadly Normandy

53 North Africa Nov 1942 Operation “Torch” Time delay Over 100 transports
Naval bombardment Mine clearing

54 North Africa Nov 1942 Operation “Torch” Time delay Over 100 transports
Naval bombardment Mine clearing Other Navy contributions in Northern Africa: Allied Naval control of Med prevented evacuation of Rommel’s troops in Tunisia. Leads to surrender of 230,000 Germany soldiers.

55 Operation “Avalanche”
Italy Jan Over 500 vessels 24,000 soldiers Standard Operations: 1. Naval Bombardment 2. Assault 3. Naval gunfire support 4. Naval aircraft support Operation “Shingle” Operation “Avalanche” Operation “Husky”

56 Normandy 6 June 1944 Operation “Neptune”
Largest amphibious Op in World History Over 4,000 ships 714,000 men 111,000 vehicles 250,000 tons supply

57 Normandy 6 June 1944 Operation “Neptune” Paratroopers Ariel bombing
Meet in “Zebra” Minesweepers Surface gunfire Assault

58 Normandy June 1944 Operation “Overlord”

59 Video Saving Private Ryan

60 Normandy June 1944 Operation “Overlord”

61 End Result ~16,000 killed

62 Other Naval Battles

63 Other Naval Battles Many skirmishes between individual ships and squadrons Surface “Raiders” Bismarck HMS Hood HMS Prince of Whales Regular Aircraft Carrier engagements Though deadly… No BIG battle like Jutland No strategically critical battle

64 Review What were the Navies’ primary roles in Europe?
Allies Axis What are examples of how they fulfilled these roles?

65 Big Picture The naval war in Europe was different than the war in the Pacific in many regards. In some sense, it resembled much of the naval war in WWI, but the addition of amphibious operations and aircraft engagements added a dimension that was unexplored in WWI. Overall, the Navies played a critical role in the Allied victory over the axis.

66 Next Class Topic WWII in the Pacific Assignment(s) Quiz Other Info


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