[citation needed] Cisler held a variety of positions at the Public Service Electric and Gas Company in New Jersey, before being named in 1941 as chief of the Equipment Production Branch at the U.S. War Production Board.
In 1944, he was granted leave of absence[citation needed] after being appointed as chief of public utilities for Supreme Headquarters Allied Expeditionary Force by General Dwight Eisenhower with responsibility for rebuilding electrical power plants in Europe.
[2] In this role, he served in Sicily, visited Russia, and in August 1944 entered Paris with General Charles de Gaulle.
He then established Overseas Advisory Associates Inc., a nonprofit to advise foreign countries on development of energy industries.
In 1991 the American Nuclear Society established a prize in honor of his contributions to development of fast breeder reactors.