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Battle of Monte Cassino Timeline

(January 17, 1944 – May 18, 1944)

The Battle of Monte Cassino was a series of four Allied assaults on German fortifications along the Gustav Line in Italy during World War II, fought between January and May 1944. The battle is infamous for the destruction of the historic Monte Cassino Abbey by Allied bombing and for the eventual Polish victory that opened the road to Rome. Less

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Italian Campaign

Goumiers formed into Moroccan Tabors groups

1943

In 1943, the Goumiers were colonial troops formed into four Groupements des Tabors Marocains (Groups of Moroccan Tabors), each consisting of three loosely organised Tabors roughly equivalent to a battalion that specialised in mountain warfare.

Image source: Battle of Monte Cassino

Goumiers formed into Moroccan Tabors groups

Allied landings in Sicily

Jul 1943

The Allied landings in Sicily in July 1943 were shortly followed by the Allied landings in mainland Italy in September 1943 by two Allied armies commanded by General Sir Harold Alexander, the Commander-in-Chief of the 15th Army Group.

Image source: Allied invasion of Sicily

Allied landings in Sicily

Allied landings in Italy and advance northward

Sep 1943

The Allied landings in Italy in September 1943 by two Allied armies were followed by an advance northward on two fronts, one on each side of the central mountain range forming the 'spine' of Italy.

Image source: Allied invasion of Italy

Allied landings in Italy and advance northward

Becker and Schlegel propose removal of abbey treasures

Oct 1943

Some months earlier, in the Italian autumn of 1943, two officers in the Hermann Göring Panzer Division, Captain Maximilian Becker and Lieutenant Colonel Julius Schlegel, proposed the removal of Monte Cassino's treasures to the Vatican and Vatican-owned Castel Sant'Angelo ahead of the approaching front.

Removal of abbey treasures completed

Nov 1, 1943

The task of removing Monte Cassino's treasures to the Vatican and Vatican-owned Castel Sant'Angelo was completed in the first days of November 1943, saving countless irreplaceable works of art and manuscripts from destruction.

Kesselring excludes abbey from defensive positions

Dec 1943

Despite its potential excellence as an observation post, German commander in Italy Generalfeldmarschall Albert Kesselring ordered German units not to include the historic Benedictine abbey in their defensive positions, informing the Vatican and the Allies accordingly in December 1943.

Winter Line anchors German defenses

Jan 1, 1944

At the beginning of 1944, the western half of the Winter Line was anchored by German forces holding the Rapido-Gari, Liri, and Garigliano valleys and several surrounding peaks and ridges.

Image source: Winter Line

Winter Line anchors German defenses

Rome's predicted fall proves overly optimistic

Jan 1944

The original estimates that Rome would fall by October 1943 proved far too optimistic, as Allied forces became bogged down against the formidable German Winter Line defenses south of the capital.

Clark plans British X Corps attack across Garigliano

Jan 17, 1944

The plan of Fifth Army commander Lieutenant General Clark was for the British X Corps, under Lieutenant General Richard McCreery, on the left of a thirty-kilometre front, to attack on 17 January 1944 across the Garigliano near the coast with the 5th and 56th Infantry Divisions.

Intelligence found in 1879 Naples bookshop book

Feb 1944

In the absence of detailed intelligence at Fifth Army HQ, planners found a book dated 1879 in a Naples bookshop that gave details of the construction of the abbey, aiding preparations for the assault.

Polish flag raised over monastery ruins

May 18, 1944

During the final phase of the Battle of Monte Cassino, the first flag raised over the ruins of the Monte Cassino monastery on 18 May 1944 at 10:20am was the Polish flag, marking the hard-won capture of the position.

Rome captured before Normandy invasion

Jun 4, 1944

Rome was captured on 4 June 1944, just two days before the Normandy invasion, marking the fall of the first Axis capital and a major milestone in the Italian Campaign.

Casualties and Aftermath

80 Italian Co-belligerent Army soldiers killed

Dec 1943

According to data compiled by the Italian non-profit organization Dal Volturno a Cassino, 80 Italian soldiers of the Italian Co-belligerent Army were killed in December 1943 alone during the early fighting in the campaign.

Commonwealth, French, American and Polish dead tallied

Jan 1, 1944 - May 31, 1944

According to data compiled by Dal Volturno a Cassino, 5,934 Commonwealth soldiers, 4,345 French soldiers, around 3,000 American soldiers, and 1,052 Polish soldiers were killed during the battles for Monte Cassino.

Allied casualties exceed 105,000 in Cassino battles

Jun 5, 1944

Parker states that total Allied casualties spanning the four Cassino battles and the Anzio campaign, with the subsequent capture of Rome on 5 June 1944, were over 105,000, while Axis casualties were at least 80,000.

French Military Cemetery established at Venafro

Jan 1, 1945

The French Military Cemetery, with more than 4,500 graves for soldiers who fell in the battles around Cassino, is located in Venafro, 15 kilometres east of Cassino.

Bombing and Destruction

Dimoline requests bombing raid on monastery

Feb 11, 1944

On 11 February 1944, the acting commander of the 4th Indian Division, Brigadier General Dimoline (usually the Commander Royal Artillery in 4th Indian), requested a bombing raid against the monastery above his troops' positions.

Massive air mission strikes the abbey

Feb 15, 1944

The bombing mission in the morning of 15 February 1944 involved 142 Boeing B-17 Flying Fortress heavy bombers, followed by 47 North American B-25 Mitchell and 40 Martin B-26 Marauder medium bombers raining destruction on the abbey.

Allied bombers destroy Monte Cassino abbey

Feb 15, 1944

On 15 February 1944, Allied bombers dropped 1,400 tonnes of high explosives on the ancient Benedictine abbey, causing widespread damage and completely destroying the monastery founded by Saint Benedict.

Town of Cassino razed by bombardments

Mar 15, 1944

The town of Cassino was completely razed by air and artillery bombardments, especially by the air raid of 15 March 1944 when 1,250 tonnes of bombs were dropped on the town. Some 2,026 of its prewar population of 20,000 were killed during the raids and the battle.

Legacy and Memorials

Moravian's Two Women depicts Moroccan troop rape

1957

A fictional instance of rape by Moroccan troops forms the basis of Alberto Moravia's 1957 novel Two Women, reflecting the controversy surrounding the conduct of some colonial troops during the Italian Campaign.

Image source: Two Women (novel)

Moravian's Two Women depicts Moroccan troop rape

US removes 'irrefutable' German use claim

1961

The assertion that the German use of the abbey was 'irrefutable' was removed from the record in 1961 by the Office of the Chief of Military History, reflecting how the US government's official position on the German occupation of Monte Cassino changed over a quarter-century.

Monte Cassino monument unveiled in Warsaw

1999

In 1999, a monument commemorating the Battle of Monte Cassino was unveiled in Warsaw, located next to the street named after Władysław Anders, commander of the Polish II Corps that captured the monastery.

Memorial unveiled in Rome honouring Allied forces

2006

In 2006, a memorial was unveiled in Rome honouring the Allied forces that fought and died to capture the city during the Italian Campaign culminating in the battles of Cassino.

Key Facts

  1. The battle consisted of four major assaults by Allied forces against the German Winter (Gustav) Line between January and May 1944.
  2. The historic Benedictine abbey at Monte Cassino, founded in 529 AD by St. Benedict, was destroyed by Allied bombing on February 15, 1944.
  3. German forces under General Heinrich von Vietinghoff defended the position with elite troops including paratroopers known as the 'Green Devils.'
  4. The fourth and final assault, Operation Diadem, launched on May 11, 1944, succeeded when Polish II Corps troops raised their flag over the ruins on May 18, 1944.
  5. The costly victory opened the way to Rome, which the Allies liberated on June 4, 1944.

Source

This Battle of Monte Cassino timeline was generated with the help of AI, using information found on the internet.

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