The Militant Group was an early British Trotskyist group, formed in 1935 by Denzil Dean Harber

Denzil Dean Harber

Denzil Dean Harber was an early British Trotskyist leader and later in his life a prominent British ornithologist.Denzil Dean Harber was born at 25 Fairmile Avenue, Streatham on 25 January 1909...

, former leader of the Marxist Group

Marxist Group (UK)

The Marxist Group was an early Trotskyist group in the United Kingdom.Its origins lay in the Communist League, the first Trotskyist group in the country. Trotsky advised the group to enter the Independent Labour Party , which had just disaffiliated from the Labour Party...

, as an entrist group inside the Labour Party

Labour Party (UK)

The Labour Party is a centre-left democratic socialist party in the United Kingdom. It surpassed the Liberal Party in general elections during the early 1920s, forming minority governments under Ramsay MacDonald in 1924 and 1929-1931. The party was in a wartime coalition from 1940 to 1945, after...

.

Over the next couple of years, the group was strengthened by an influx of South Africa

South Africa

The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

n Trotskyists, including Ted Grant

Ted Grant

Edward "Ted" Grant , 9 July 1913 in Germiston, South Africa – 20 July 2006 in London) was a South African Trotskyist who spent most of his adult life in Britain...

 and Ralph Lee. However, rumours concerning the activity of Lee prompted around ten members, including Grant, Lee, Jock Haston

Jock Haston

James "Jock" Ritchie Haston was a Trotskyist politician and General Secretary of the Revolutionary Communist Party in Great Britain.-Early years:...

 and Gerry Healy

Gerry Healy

Thomas Gerard Healy, known as Gerry Healy , was a political activist, a co-founder of the International Committee of the Fourth International, and, according to former prominent U.S. supporter David North, the leader of the Trotskyist movement in Great Britain between 1950 – 1985...

 to split in 1937 and form the Workers International League.

In 1938, the Militant Group merged with the Revolutionary Socialist League

Revolutionary Socialist League (UK, 1938)

The first RSL was formed in early 1938 with the merger of two different parties, the Marxist League led by Harry Wicks and the Marxist Group led by C. L. R. James....

, Revolutionary Socialist Party

Revolutionary Socialist Party (UK)

The Revolutionary Socialist Party, initially known as the International Socialist Labour Party, was a political party in Britain. It emerged out of a Scotland-based faction of the Socialist Labour Party, which had left the SLP in the early 1930s. The party was mainly based in Edinburgh, where it...

 and the Marxist Group to form a new Revolutionary Socialist League, the official section of the Fourth International

Fourth International

The Fourth International is the communist international organisation consisting of followers of Leon Trotsky , with the declared dedicated goal of helping the working class bring about socialism...

in Britain.