In 1948, Kalser founded the film production company
Marathon International Productions. At Marathon, Kalser produced some of the first
newsreels intended for television and filmed the
1948 Winter Olympics for
DuMont Television Network, the first to be broadcast on American television. Kalser produced several short films through Marathon during the 1950s and 1960s, the most prominent of which was the Oscar-winning
Crashing the Water Barrier. the next year, the one- and two-reel awards (the latter held that year by
The Bespoke Overcoat) would be merged into a single short film award. In 1966, Kalser admitted that
Crashing the Water Barrier was produced by Marathon as an advertisement for an oil company. Kalser hoped the film would win another Academy Award. He additionally produced the Emmy-nominated
For Years to Come for
Chrysler. Kalser and Marathon would also produce non-advertisement works, such as
The Unknown War, a
syndicated docuseries on the
Eastern Front conflict between the
Axis powers and the
Soviet Union during World War II. ==Personal life and death==