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The Siege of Tobruk, 1941: the Polish Rats of Tobruk

Second World War · August to December 1941 · Allies vs Germany and Italy · ~5 min read · Updated October 2026

Soldiers of five Allied armies in the Tobruk garrison, October 1941: from left a Pole, a Briton, an Indian, an Australian and a Czechoslovak

At a glance

Allies (Australia, Britain, Poland, Czechoslovakia and others)Gen. Stanisław Kopański (Polish brigade); Maj. Gen. Leslie Morshead, then Maj. Gen. Ronald Scobie
vs
Germany and ItalyGen. Erwin Rommel
Date
Siege 10 April to 10 December 1941 (first link-up with the Eighth Army on 27 November); Polish brigade in Tobruk from August 1941
Location
Tobruk, Libya
Period
Western Desert campaign, Second World War
Outcome
Allied victory; the siege was lifted
By the numbers
SideStrengthLosses
Polish brigadeAbout 4,800 soldiersFigures vary between sources
AxisGerman and Italian divisions besieging the fortressNot specific to the Polish sector

The Polish figure is the brigade's strength at the end of August 1941.

Quick answer

The siege of Tobruk lasted from April to December 1941, when Axis forces under Erwin Rommel surrounded the Libyan port, held at first mainly by the 9th Australian Division. From August 1941 the Polish Independent Carpathian Rifle Brigade under General Stanisław Kopański, about 4,800 men, was shipped in by sea, relieved Australian units and held some of the hardest sectors of the perimeter. The garrison held until the siege was lifted, and the Polish soldiers proudly shared the name the Rats of Tobruk.

In the summer of 1941 a desert fortress on the coast of Libya was holding out against Erwin Rommel. Into it, by night convoys, came a brigade of Polish soldiers who had escaped their occupied country and travelled half the world to fight: the Carpathian Brigade.

The fortress in the desert

In April 1941 Rommel's German and Italian forces drove the British back across Libya, but the port of Tobruk held out, defended at first mainly by the 9th Australian Division under Major General Leslie Morshead1. For months it was supplied only by sea, under constant air attack.2

Black and white map of the Tobruk defensive perimeter on the Libyan coast with arrows of enemy attacks
The Tobruk perimeter as stabilised by June 1941, with the directions of enemy attacks between April and June, from I.S.O. Playfair's British official history (1956). Public domain

From Syria to Africa

The Independent Carpathian Rifle Brigade had been formed in French Syria in 1940 from Poles who had escaped through Romania and Hungary.3 When France fell, its commander Stanisław Kopański led it into British Palestine rather than accept the armistice4, and it trained and served in Egypt.

Into Tobruk

In August 1941 the brigade was carried into Tobruk in a series of night convoys.3 By the end of the month about 4,800 Polish soldiers were in the fortress, relieving Australian units on the perimeter, first in the south and then in the west.

Australian soldiers with rifles in a stone-lined trench in the flat desert at Tobruk
Australian troops in a front-line position at Tobruk, 13 August 1941, the month the Polish brigade began relieving Australian units on the perimeter. Public domain
They had escaped their homeland and crossed half the world, and in the desert they held the hardest line.

The Medauar salient

In October the Poles took over the most dangerous sector, around the Medauar salient, where the enemy lines lay close4. They held it through weeks of shelling, bombing and night patrol fighting, and when the British Eighth Army attacked to relieve the fortress in November, Polish units joined the fighting, and in December they took the Medauar hill and Acroma, the link-up that finally lifted the siege.

The Rats of Tobruk

The siege was lifted at the end of 1941. German propaganda had mocked the defenders as rats5, and they took the name as a badge of honour. The Polish Carpathians wore it proudly; many went on to fight at Monte Cassino in the Polish II Corps.

Officers walking past a long line of saluting Polish soldiers in the desert
General Władysław Sikorski visiting the Polish Carpathian Brigade at Tobruk in November 1941. Public domain

Frequently asked questions

When did Polish troops fight at Tobruk?

The Polish Carpathian Brigade was in Tobruk from August to December 19416, during the second half of the siege.

Who commanded the Polish brigade at Tobruk?

General Stanisław Kopański.

How many Poles were at Tobruk?

At the end of August 1941 the brigade numbered about 4,800 soldiers in the fortress.

Who were the Rats of Tobruk?

The defenders of the besieged fortress, who adopted a German insult as a badge of honour; the Polish soldiers shared the name.

What happened to the Carpathian Brigade later?

It became part of the Polish forces in the Middle East and its soldiers later fought in Italy, including at Monte Cassino.

Sources and notes

Numbered notes in the text point to the works below.

  1. Barton Maughan, Tobruk and El Alamein (Australia in the War of 1939-1945, Series 1, Army, Vol. III) (Australian War Memorial, 1966). ↩
  2. Chester Wilmot, Tobruk 1941: Capture, Siege, Relief (Angus & Robertson, 1944). ↩
  3. Instytut Pamięci Narodowej, Przystanek Historia (Łukasz Przybyło), “Samodzielna Brygada Strzelców Karpackich w walkach o Tobruk” ↩ a b
  4. Instytut Pamięci Narodowej, Przystanek Historia (Rafał Dyrcz), “Polska flaga na Medauarze. Samodzielna Brygada Strzelców Karpackich” ↩ a b
  5. Institute of National Remembrance (IPN), “The Rats of Tobruk: An Enduring Australian and Polish Friendship” ↩
  6. Stanisław Kopański, Wspomnienia wojenne 1939-1946, Memoir of the brigade's commander; London: Katolicki Ośrodek Wydawniczy Veritas (1972 edition catalogued; first published in the 1960s). ↩
  7. Wikipedia, “Siege of Tobruk”
  8. Wikipedia, “Samodzielna Brygada Strzelców Karpackich”

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