McLaglen claimed to have been born in Tunbridge Wells, Kent, although his birth certificate records Stepney in the East End of London as his true birthplace. His father, Andrew Charles Albert McClaglen, later a bishop of the Free Protestant Episcopal Church of England, moved the family to South Africa when McLaglen was a child. One of ten siblings, he had eight brothers and a sister. Four of his brothers also became actors: Arthur (1888-1972), an actor and sculptor, and Clifford (1892-1978), Cyril (1899-1987) and Kenneth (circa 1901-1979).

McLaglen returned to Britain for We're Going to Be Rich (1938) with Gracie Fields. Back in Hollywood he did some films for RKO: Pacific Liner (1939) and Gunga Din (1939). The latter, with Cary Grant and Douglas Fairbanks Jr., was an adventure epic loosely based on Rudyard Kipling's poem that served as the template decades later for Indiana Jones and the Temple of Doom (1984). He supported Nelson Eddy in Let Freedom Ring (1939) at MGM and was in Ex-Champ (1939). He supported Brian Aherne in Captain Fury (1939) and starred in Full Confession (1939) for John Farrow at RKO, the latter film being a semi-remake of The Informer. At Universal McLaglen teamed with Basil Rathbone in Rio (1939) and Jackie Cooper in The Big Guy (1939). He was top billed in Edward Small's South Seas adventure, South of Pago Pago (1940). He remained top billed for Diamond Frontier (1940), and Broadway Limited (1941). McLaglen and Lowe reprised their roles from What Price Glory? in the radio program Captain Flagg and Sergeant Quirt, broadcast on the Blue Network (28 September 1941 - 25 January 1942, and on NBC 13 February 1942 - 3 April 1942). McLaglen and Lowe then played basically the same roles but under different names in Call Out the Marines (1942) at RKO. He starred in Powder Town (1942) and went to Fox to support Gene Tierney in China Girl (1942). He was one of many stars in Forever and a Day (1943) and had a support role in Tampico (1943), and Roger Touhy, Gangster (1944). McLaglen was a villain in Bob Hope's The Princess and the Pirate (1944) and he could be seen in Rough, Tough and Ready. Answer this question using a quote from the following article:

Is there anything else notable?
He supported Nelson Eddy in Let Freedom Ring (1939) at MGM and was in Ex-Champ (1939).