TNA ADM 234 360

CONTENTS
Page
Introduction xiii
CHAPTER I
Preliminary Events, 10th to 18th May, 1940
Germany invades Holland and Belgium
1
Allies reach River Dyle
1
German thrust on French 9th Army front
1
Occupation of Walcheren and Zuid Beveland imminent
2
Germans cross Meuse
2
Dutch Army surrenders
2
Allies withdraw to River Escaut
2
French 9th Army front broken
3
Allied rail communications severed
3
CHAPTER II
The week before Operation "Dynamo", 19th to 25th May, 1940
Compulsory withdrawal of B.E.F. foreseen
4
...
R.A.F. Component begins return to England
4
...
Vice-Admiral Dover, represented at War Office Conference
4
Channel ports the German objective
4
Gerneral Weygand directing Allied operations
5
R.A.F. Component to set up rear H.Q. at Hawkinge
5
Naval Staff at Dover considers large scale evacuation
5
Provision of small craft considered
5
Counter-attack south of Arras
6
Germans approach Boulogne
6
Organisation of the canal line
7
Emergency evacuation again considered at the War Office
7
Canal line occupied
7
Boulogne cut off, Calais threatened
7
"The Operation will be known as 'Dynamo' "
7
Enemy within 20 miles of Dunkirk
8
Calais cut off
8
i

RESTRICTED
CHAPTER I
PRELIMINARY EVENTS
10TH-18TH MAY 1940 (See Plan 1)
10TH MAY
Germany Invades Holland and Belgium
On the 10th May, following the invasion of Holland and Belgium, the Franco-
British forces under General Georges, commanding the French Front of the
North East, crossed the Belgian frontier and began their advance to the River
Dyle,¹ according to plan.
11TH MAY
Allies reach River Dyle
During the afternoon and evening of the 11th May the leading infantry brigades reached the Dyle.
The news from the Belgian Army, of which King Leopold had assumed command on the outbreak of war, was not good. At Maastricht the Belgians had been unable to demolish important bridges over the Albert Canal and the river Meuse, and the enemy had begun to move across them; whilst the
Belgian anti-tank obstacle eastward had been reconnoitred by the French
Cavalry Corps and found to be not only badly sited but unfinished.²
12TH MAY
German thrust on French 9th Army Front
The Allied advance to the Dyle was successfully completed by the 12th May.
The B.E.F. was in position between Wavre and Louvain, with the French 7th
Army (General Giraud) on its left and the French 1st Army (General Blanchard)
on its right. On the right of the French 1st Army was the French 9th Army
(General Corap) of the French Southern Command. Disquieting news was, however, received from the south, where a German thrust with at least two armoured divisions¹ was reported as developing on the front of the French
9th Army.
This thrust eventually proved to be the beginning of the German breakthrough and their sweep westward, which cut off the Allied northern forces from the main French forces in the south, led to the capture of Boulogne and
Calais, and culminated in the evacuation of Dunkirk.
General Billotte was in command of the French First Group of Armies, which included the French 1st Army (with the French Cavalry Corps), and the French 7th Army. Between these two armies lay the Belgian Army
(under the independent command of their King), and the B.E.F., which, though under the command of General Georges, was not under that of General
Billotte. On this day, however, it was agreed to co-ordinate the action of the
British, French and Belgian forces, and General Billotte was appointed to perform this task.³
I Lord Gort's Second Despatch, para. 18.
2 Lord Gort's Second Despatch, para. 19.
3 Lord Gort's Second Despatch para. 22.
1

THE EVACUATION FROM DUNKIRK
CHAP. I
13TH MAY
Occupation of Walcheren and Zuid Beveland imminent in accordance with their plans, and by the May, units of the latter
Movements of the main bodies of the French 13th Ist and 7th Armies continued north of Antwerp on the Dutch border. It was, however, becoming inof Walcheren and Zuid Beveland, which was developing from the north-east.
creasingly evident that they would be unable to prevent the enemy occupation northern forces to the general line Louvain-Antwerp.
During the day and the following night the Belgians were withdrawing their
14TH MAY
Germans cross Meuse
May the 14th was crucial, for on that day the enemy penetrated the French
9th Army front, and crossed the Meuse between Sedan and Mézières.¹ (See
Plan 1).
15TH MAY
Dutch Army surrenders
On the 15th May the Dutch Army laid down its arms. The immediate effect of this on the operations of the B.E.F. was small, but "I anticipated says
Lord Gort, "that this would come as a shock to the Belgian Army".2
The French 7th Army withdrew its advanced formations to the neighbourhood of Antwerp, and the French divisions on the B.E.F.'s left flank were ordered to move across the British rear to fill the gap which had been created on the French 9th Army's front. This move did not, however, actually take place till some 3 days later,² and it then left the Belgian Army responsible for the security of the British left flank.
On the British front the day passed quietly on the whole. The 1st Corps
[Lt.-Gen. M. G. H. Barker] was not attacked in strength; 3rd Division [Maj.-
Gen. B. L. Montgomery] of 2nd Corps [Lt.-Gen. A. F. Brooke] was attacked north-west of Louvain, and its forward positions were penetrated, but a counterattack successfully restored the original line.
and, in spite of British support, some ground was lost.
At about 1800, however, the enemy penetrated the French 1st Army's front,
16TH MAY
Allies withdraw to river Escaut was were impracticable,3 because the French 1st the B.E.F.'s right flank
By the 16th May it became clear that a prolonged defence of the Dyle position withdrawal unlikely to make good the ground lost on Army the on and a further
It seemed likely to be forced on them by events previous in day the south.³
on night of Senne and one day on the River Escaut, spending on the the was River therefore decided to withdraw to the River one day began. 16th-17th May, the 15 to 20 miles withdrawal Dendre. to Accordingly, the Senne positions
2 1 Lord Lord Gort's Second Despatch
2 Lord Gort's Second Despatch, para. 22.
Gort's Second Despatch, para. para. 23. 24.
2

THE EVACUATION FROM DUNKIRK
CHAP. XI
The Admiralty had already continued (2312/2) for the undertaken evacuation that ships would be night the evacuation 3rd to 4th on June, this and night. they To this the French agreed. complete on the vided and air protection now urged the French of Admiralty trops pro-
Plan for the night embarkation, the hours of 2230/3 and with such ships for
For this last and night the maximum it was decided effort to was cut to down be made, by one hour the time mained available, between to be made by personnel 0230/4. From the as re-
Pier, liftings were to be sent to the entire vessels, destroyers, and East minesweepers; be ships received, were and it was estimated that length of the pier as paddle as they could Drifters and fast thus be provided and for docks 14,000 of men. the inner harbour. small craft were to go would up to the quays be French ships, for which right latter pier the remaining would also lift ships (minesweepers the other than paddle, the beach, the Quai Félix Faure, British Avant Port (West Pier); from numbers could be estimated, were and the to New responsible for evacuation from Malo no boats. Locust was to remain loads ferried out to her by small vettes and skoots) outside and troops, receive to number of 5,000. The gunboat cor-
It was intended to employ on the work a force of 9 personnel vessels, 9
destroyers (all that were available), 4 paddle minesweepers, 7 fleet minesweepers,
9 drifters, the Locust, 2 corvettes, 4 French torpedo boats, and a number of organised motor boats flotillas including lifeboats from Ramsgate and Dover, together with a large number of French and Belgian fishing vessels. Eleven small French ships and 3 small tugs left Cherbourg for Dover on the night
2nd-3rd June; Le Havre was scheduled to send 8 trawlers, 2 minesweepers,
1 tug, and 20 small dinghies; and Fécamp sent 14 trawlers.
During the afternoon of the 3rd the French authorities transmitted the figure of French troops still remaining in Dunkirk. This was about 30,000, a proportion of whom belonged to other than combatant units. The total capacity of the lifting force, if used to the full, was 30,000, but this was about 5,000 more than the facilities within the port would permit of being embarked in 4 hours, even if the French troops moved with the greatest rapidity at all points of embarkation. On previous occasions there had been some instances of difficulty in persuading French troops to embark otherwise than as complete units.
Vice-Admiral Ramsay consequently impressed on the French liaison officers the necessity of speed, and he added a number of French officers and ratings to the augmented pier parties which were despatched to Dunkirk at 2200, in
I The following ships landed troops in England on 4th June (numbers landed in brackets)
British - destroyers Express (611), Malcolm (736), Sabre (592), Shikari (383), Vanquisher
Minesweepers Albury (400), Halcyon (501), Kellett (30), Leda (500), Medway Queen (266), ferred to trawler off Dunkirk on account of collision damage) Gunboat Locust (196)
(414), Venomous (1200), Whitshed (444); Corvettes Guillemot (460), Kingfisher (200, trans-
Princess Elizabeth (329), Queen of Thanet (150), Speedwell (396) Trawler Saturn (418)
Drifters Forecast (123), "L.H.W.D." (90) Skoots Bornrif (96), Hondsrug (308), Pascholl
(255), Ruja (300); Yacht Gulzar (140); Personnel vessels Autocarrier (712), Canterbury
Princess (659), Côte d'Argent (1349), King George V (817), Lady of Mann (1244), Newhaven (729),
(1350), Tynwald (3000); Tugs Racia (123), Sun XV (37) War Dept. M.Ls.
Maud (1270), Royal Sovereign (took the place of Manxman which refused to sail)
Pigeon (23), Swallow (23); Sailing Barge Beatrice Maud (31), Tanga not reach England until 5th and June) launches (260); R.N.L.I. lifeboats Edward Z. Dresden (50), Greater (did London (48); Motor boats
Nayland Bonny Heather (210), Diana Mary (28), Elizabeth Green (10), Meuse (50),
Coliath trawlers (355), 3 patrol vessels (836), 13 trawlers and M.F.Vs. (1416), 1104. Belgian Tug
3 M/S (55), Walker II (76). French 5 Torpedo boats 2 S/M chasers (127),
(183), 5 trawlers (554).
114

INDEX
Lord Southborough, 60, 69, 83.
Lorina, sunk, 45.
Louise-Irene, 73n.
Louise Marie, 62n.
Lucian Gougy, 107n.
Lusyne, Capt. P., 116.
Lutteur, 62.
Lydd, 28n, 36-7, 44, 52, 100-1, 103.
Lydie-Susanne, 73.
M.41, 73n.
McClelland, Lt. Cdr. J. W., 59n, 75-7 (work at La Panne).
McCullough, Lt. Cdr., 59n.
Mackay, 20n, 27, 35-6 (put out of action).
MacKewn, Lt. A. R., R.N.R., takes over St. Seriol, 48.
McRea, Lt. H. C. J., 37.
Maid of Orleans, 16-17, 22n, 24, 31n, 54n, 87 (damaged), 127.
Mainwaring, Lt. A. H., killed, 93.
Ma Joie, 60n.
Malabar, 85.
Malcolm, 28n, 54n, 55, 62 (makes two trips on 30th May), 83 (collides with Dunkirk pier),
109 (sent back empty), 112n, 114n, 116, 118.
Malden Annie IV, abandoned, 72.
Malet, Pilote, 73.
Malines, 29n, 37.
Mallard, 34, 99, 104.
Mallow, 88.
Malo, see Beaches.
Manxman, 29n, 54n, 102, 114n.
March, Mr. F. J., 47.
Maréchal Foch, sunk, 116.
Maretta, damaged, 13.
Margaux, 73.
Marie, 74.
Marlborough, 72n.
Marmion, 28n, 54n, 100-1, 107n, 109.
Marrack, Capt. H. R., 74.
Marsayru, adventures of, 72-3.
Mary Rose, sunk, 72.
Mary Scott, 100.
M.A./S.B.6, 52 (sinks Minikoi), 66-7 (takes Lord Gort to Dover), 75.
M.A./S.B.7, 111-112 (in operation CK.).
LA./S.B,10, 101-2, 108, 119.
Massey Shaw, 119.
Maund, Cdr. G. O., speeds up embarkation, 63-64; leads ships into Dunkirk, 101.
Medical Parties, sent across, 49.
Medway Queen, 23n, 27, 31, 100-1, 105, 107n, 109, 114n.
Merchant Navy, see Civilians.
Mermaiden, 72n.
Meuse, 114n.
M.F.H., 72n.
Michael Stevens, 107n.
Midas, 23n, 107n.
Mines and mining, British, 34; German, 38, 93, 110; French, 62-3.
Minikoi, sunk 52.
Ministry of Sea Transport, 21.
Ministry of Shipping, 5.
Minotaur, 72n.
Mirasol, 53.
Mistral, 39, 40n, 41 (damaged), 43.
Monarda, 71n.
Mona's Isle, 16, 19.
Mona's Queen, 16, 28, 31n, 38 (sunk).
Montgomery, Maj.-Gen. B. L., 2, 75, 77 (embarks).
Morrison, P. O., 72.
Montrose, 20n, 27, 32n, 36 (put out of action).
202

PLAN 1
Soate of Miles
10
5
o
10
20
30
40
N
The German break-through on 17th.18th
KENT
OSTEND
ANTWERP
DUNKIRK LA PANNE NIEUPORT
BRUGES
18th MAY
may
13th
MAY ON MAPS IN LORD CORTS DESPATCH
R.M.
FURNES
Yser
GAND
MALINES
GRAVELINES
a
BERGUES
CALAIS
SPYKE
RIYS
R.Senna
ALOST
WORMHOUTE
th
F.
LOUVAIN
YPRES
18MAY
Phyle
WATTEN
COURTRAI
MENIN
Escaut
BRUSSELS
13th MAY
CASSEL
COMINES
BOULOGNE
StOMER
R.Dendre
WAVRE
HAZEBROUCK
ARMENTIERES
P.LYS
AIRE
MERVILLE
LILLE
ATH
R.Meuse
EXOLISH
NAMUR
StAMAND
LA BASSEE
R.Sambre
VALE CIENNES
DOUAI
Fscaut
RRA
R.
18th MAY
18thMAY
13th:MAY
CAMBRAI
DOULLENS
ABBEVILLE
R
2.50mm
ALBERT
DIEPPE
PERONNE
AMIENS
st QUENTINE
18th MAY
MEZIERES
SEDAN
R.Oire
Approximiste BritishFrenchead Belgiadine on 13ᵗʰ May:
R.Aisne
"
" " 18th ":
German break break-through shewn in blue
RMass
TSD/HS (655)
C.B.H. 16675- Wt.41534 Dd. -625-6/49

PLAN 2
Scale ofMiles to
5
o
10
20
30
40
N
The Allied withdrawal into
18th MAY
the Dunkirk
KENT
GSTEND
.
30ᵗMAY
BRUGES
ANTWERP
PANNE
perimeter on the
+
NIEUPORT
23rd MAY
30th May
May
+
4.
FURNES
MALINES
Yser
GAND
BASED ON MAPS IN LORD GORT'S DESPATCH
LINES
C
GRAVE
STATES
BERGUES
R.Lys
ALOST
R
WORMHOUTE
LOUVAIN
CHANNEL
YPRES
COURTRAI
Escant
R.Dyle
WATTE
MENIN
BRUSSELS
.
R
St. OMER
CASSEL
COMINES
Dandre
WAVRE
BOULDONE
.
ZEBROUCK
INS
ARMENTIERES
R.
R
AIRE
MERVILLE
ATH
LILLE
23rd:MAY
Meuse
23rd MAY
St. AMAND
NAMUR
.
BASSEE
CARVIN
.
18th MAY
R.
Sambre
St.POL
.
VALENCIENNES
DOUAI
BARRAS
Escaut a
CAMBRAI
OULLENS
BEVILLE
B
ALBERT
R.Somme
PERONNE
him
AMIENS
StQUENTIN
French 10th Arm
MEZIERES
SEDAN
R.Oise
Mause
The Dunkirk Perimeter on 30th May.
Allied line on 18th Щау
French 3rd Army R.Aisne
Approximate British, French and Belgiantine on 23rd May
German progress shewn in blue
TSD/HS (ESG)
C.B.H.16675

PLAN 2
Scale ofMiles to
5
o
10
20
30
40
&
The Allied withdrawal into
18th MAY
the Dunkirk
KENT
GSTEND
30thmay
BRUGES
ANTWERP
PANNE
perimeter on the
NIEUPORT
23rd MAY
+ 30th May May +
+
x
FURNES
GAND
MALINES
LINES
Yser
BASED ON MAPS IN LORD GORT'S DESPATCH
C
SAYKER
BERGUES
R.Lys
ALOST
a
WORMHOUTE
LOUVAIN
CHANNEL
YPRES
COURTRAI
R.Dyle
WATTE
MENIN
BRUSSELS
.
R
St. OMER
CASSEL
COMINES
WAVRE
BOULDONE
.
Dandre
ZEBROUCK
IVS
ARMENTIERES
R.
AIRE
LALT
MERVILLE
ATH
LILLE
23rd:MAY
Meuse
23rd MAY
.
St. AMAND
NAMUR
BASSEE
CARVIN
.
18th MAY
R
Sambre
St.POL
VALENCIENNES
DOUAI
ARRAS
R.Escaut
CAMBRAI
DOULLENS
BEVILLE
B
ALBERT
Somme
PERONNE
AMIENS
him
St.QUENTIN
French 10th Army
MEDIERES
SEDAN
R.Oise
RMause
The Dunkirk Perimeter on 30th May
Allied line on 18th Щау
French 3rd Army R.Aisne
Approximate British, French and Belgiantine on 23rd May
German progress shown in blue
TSD/HS (E56)
C.B.H.16675