
Arkforce was an ad hoc formation of the British Expeditionary Force during the Battle of France in 1940.

The 23rd Armoured Brigade, originally formed as the 23rd Army Tank Brigade, was an armoured brigade of the British Army that saw service during the Second World War. The brigade was a 2nd Line Territorial Army (TA) formation. It was reorganised and renamed the 23rd Armoured Brigade, when it was assigned to the 8th Armoured Division, although it never operated under command of the division.

A battalion of detachments is a term used to refer to battalion-sized units of the British Army formed from personnel drawn from several parent units. They were used to temporarily collect together detached companies or individual stragglers into more manageable-sized formations for logistics purposes or to provide additional fighting forces. Two longer-term battalions were raised by Arthur Wellesley in 1809 for service in the Peninsular War. These comprised stragglers left behind following the British withdrawal at Corunna and saw action in the Oporto and Talavera campaigns before they were disbanded and the men returned to their regiments. Though effective on the battlefield criticism was made of their discipline in camp and on the march and there was concern over the impact on manpower in their parent regiments. Other battalions of detachments were later formed in the field from British and foreign units in the peninsula and during the Walcheren Campaign. Three units of British line infantry were formed from depots in England in 1814 but saw no action before the hostilities ceased after the Treaty of Paris. Similar units were employed as late as the 1857 Indian Mutiny.

The Beauman Division was an improvised formation of the British Expeditionary Force (BEF) during the Second World War, which fought in France against the German 4th Army in June 1940, during Fall Rot, the final German offensive of the Battle of France.

Combeforce or Combe Force was an ad hoc flying column of the British Army during the Second World War, commanded by Lieutenant-Colonel John Combe. It comprised parts of the 7th Armoured Division of the Western Desert Force. The rapid British advance during Operation Compass forced the Italian 10th Army to evacuate Cyrenaica, the eastern province of Libya. In late January, the British learned that the Italians were retreating along the Litoranea Balbo from Benghazi. The 7th Armoured Division was dispatched to intercept the remnants of the 10th Army by moving through the desert, south of the Jebel Akhdar via Msus and Antelat, as the 6th Australian Division pursued the Italians along the coast road, north of the jebel.

Established in December 1917, Dunsterforce was an Allied military force named after its commander, General Lionel Dunsterville. The force had fewer than 350 Australian, New Zealand, British and Canadian officers and NCOs, who were drawn from the Western and Mesopotamian fronts. The force was intended to organise local units in northern Iran (Persia) and southern Caucasus, to replace the Tsarist armies that had fought the Ottoman armies in Armenia. The Russians had also occupied northern Iran in co-operation with the British occupation of south Iran, to create a cordon to prevent German and Ottoman agents from reaching central Asia, Afghanistan and India.
The Experimental Mechanized Force (EMF) was a brigade-sized formation of the British Army. It was officially formed on 1 May 1927 and was intended to investigate and develop the techniques and equipment required for armoured warfare. As such it was the first armoured formation of its kind in the world. It was renamed the Armoured Force the following year and for two years it participated in exercises which demonstrated the capabilities of mechanised forces against traditionally-organised and trained infantry and cavalry. The force was controversial in the army and was disbanded in February 1929. The EMF and AF were followed by experiments with a Tank Brigade in 1931, which had three mixed battalions of medium and light tanks and a battalion of Carden Loyd machine-gun carriers as a reconnaissance force.

The 23rd Armoured Brigade, originally formed as the 23rd Army Tank Brigade, was an armoured brigade of the British Army that saw service during the Second World War. The brigade was a 2nd Line Territorial Army (TA) formation. It was reorganised and renamed the 23rd Armoured Brigade, when it was assigned to the 8th Armoured Division, although it never operated under command of the division.

Nickforce was an improvised formation of the British First Army in the Tunisian Campaign of World War II. It was hastily formed from elements of the British 6th Armoured Division on 14 February 1943, for the defence of Thala, during the latter stages of the Battle of Kasserine Pass. It took its name from the commanding officer, Brigadier Cameron Nicholson. In desperate fighting, the force successfully blocked a Kampfgruppe of the 10th Panzer Division, under the direct control of Generalfeldmarschall Erwin Rommel, on 21 and 22 February.