Complex sentence: The success of the plan also led to its implementation in support commands and support units of combat commands as well, and beginning in the late spring of 1948 AF Base Units were replaced by wings, groups, and squadrons.
Split into simpler sentences: The success of the plan also led to its implementation in support commands and the support units of combat commands as well. Beginning in the late spring of 1948 AF Base Units were replaced by wings, groups, and squadrons.