[2][1] After returning to Detroit, Babcock was assigned as assistant pastor at Holy Name Parish in that city.
At the same time, he was appointed chaplain at the St. Mary's Student Parish next to the University of Michigan campus in Ann Arbor.
With the closing of the North American College in 1940 due to World War II, Babcock came back to the United States; he was appointed pastor of St. Mary's parish in Ann Arbor.
[3] He received his episcopal consecration on March 25, 1947, from Cardinal Edward Mooney, with Bishops William Murphy and Stephen Woznicki serving as co-consecrators.
[2] Later that year, Babcock was appointed as vicar for the religious orders in the archdiocese and was named a domestic prelate by the pope.