Marcus graduated from the Sundsta-Älvkullen High School in 1999.
The same year, he became a patrol leader and airborne ranger with the Swedish Army Airborne Ranger School.
In year 2000, he began his studies at Chalmers University of Technology in Gothenburg, Sweden, focusing on electronics and artificial intelligence, communication technology and basic space engineering. He received his master's degree in electrical engineering in 2007.
Marcus joined the Karlberg Military Academy in Stockholm, Sweden, in 2003, where he received leadership training and graduated as an officer from the military officer programme in 2005.
In 2004, Marcus joined the Swedish Air Force Flying Training School to attend basic flying training, which he completed in 2005, followed by basic fighter training in 2006.