Bowen turned to writing in 1930, using his prestige as editor-in-chief of Aviation Magazine to write Flying From The Ground Up, a non-fiction work on how to fly an airplane. He began freelancing for pulp magazines. In 1934, he started his own pulp magazine, Dusty Ayres And His Battle Birds, for Popular Publications. Twelve issues were released, the first eleven published monthly from July 1934 through July 1935, with most issues released monthly. Bowen continued writing for mystery, adventure, sports, and aviation pulp magazines through the 1950s. After the invasion of Poland by Germany in 1939 sparked World War II, Crown Publishers called Bowen, asking for an adventure story based on the war. The Dave Dawson series, also known as the War Adventure series, was the result. Bowen got to work immediately, and the first book, Dave Dawson At Dunkirk, was published in 1941. A total of 15 volumes were released between 1941 and 1946.