Complex sentence: Olds was assigned to command the 71st Fighter Squadron, then detached from the 1st FG as an Air Defense Command unit stationed at Greater Pittsburgh Airport, Pennsylvania, and as a result missed service in the Korean War, despite repeated applications for a combat assignment.
Split into simpler sentences: Olds was assigned to command the 71st Fighter Squadron, which was soon detached from the 1st FG to the Air Defense Command and based at the Greater Pittsburgh Airport in Pennsylvania. As a result he missed service in the Korean War despite repeated applications for a combat assignment.