After his graduation from Minnesota, he played semi-pro ball with the Minnesota All-Stars. His greatest success was in coaching, and he gave up his player role to concentrate on coaching. He started at
Fergus Falls, Minnesota from 1931 to 1933, and at
Faribault, Minnesota from 1933 to 1937. In 1937, he came to
Wausau. In his 40 years of coaching high school football, his teams had a combined record of 265–43–14. His record at Wausau High was 230–33–9. Over those 34 seasons, his team either won outright or shared in 26 conference championships. "For years he coached basketball, among other sports, and his basketball teams compiled a record of 128 wins against 88 losses, and won the state championship in his first year with the team." Wausau High's record in the early to mid-1940s was unequaled for many years. In 1939, Wausau won seven games and lost one, the last game they would lose for years. In 1940, they went undefeated and outscored their opponents 299 to 12, without giving up a single point until the final quarter of the final game of the year. In 1941, they went undefeated again, and then again in 1943 and 1945. They finally lost a game in 1946, their 46-game winning streak setting a Wisconsin high school record that lasted until 1987 when it was broken by Manitowoc Lincoln (48 straight games; 1984-1987) and later by Waunakee (48 games; 2009-2012). Brockmeyer's winning percentage is .845, making him one of the winningest football coaches in Wisconsin history. Both
Football Hall of Famers Elroy Hirsch and
Jim Otto played for him at Wausau High School. Brockmeyer is the only man ever to have coached two members of the
Pro Football Hall of Fame in high school. He also coached another Hall of Fame member,
Bruce Smith the only man to win the
Heisman Trophy (1941) from the
University of Minnesota. As coach at
Wausau High School from 1937 to 1970, Brockmeyer had a 230-33-9 record. He was undefeated in 13 seasons. His teams won 26 conference titles. In the 1940s, he had a 72-2-4 record that included a 46-game winning streak. A scholarship was later inaugurated in his honor. == Popular culture ==