 Among the Sikhs who already lived in America prior to the wars, many Sikhs joined them, mainly during World Wars I and II.Among those who served in the US military include Bhagat Singh Thind in World War I.The first Sikh gurdwara in the US was the Gurdwara Sahib Stockton, in Stockton, California; the Gurdwara was created in 1912.