Ben Alexander (actor)
Nicholas Benton Alexander III was an American motion picture actor, who started out as a child actor in 1916. He is best remembered for his role as Officer Frank Smith in the Dragnet franchise.
Ben Alexander was born in Goldfield, Nevada, and raised in California. Alexander made his screen debut at age of five in Every Pearl a Tear. He went on to portray Lillian Gishs young brother in D.W. Griffiths Hearts of the World. After a number of silent films, he retired from screen work, but came back for the World War I classic, All Quiet on the Western Front , in which Alexander received good notices as an adult actor as Kemmerick, the tragic amputation victim.
Source: Wikipedia