Robert Mulder was born in Grand Rapids, Michigan and graduated from Grand Rapids Christian High School in 1947. He was drafted into the Army in October of 1950 and went through medic training at Camp Adenberry in Indiana. He went through training quickly because the Army had been short on medics. Robert was shipped to Korea and assigned to the 38th Medical Company of the 2nd Division. Robert was eventually wounded and sent to a hospital ship in Seoul to have all the shrapnel removed from his arms and legs. After he healed Robert worked on guard duty at the medic station until he got frost bite and was sent to another hospital. Robert was then sent back to Michigan and discharged in July of 1952.