Complex sentence: On the positive side, the Far East Command initiated a program of reclaiming and refurbishing war materiel from abandoned stocks throughout the Pacific had not only recovered a great deal of valuable stores and equipment, it had also generated a useful repair and rebuilding industry in Japan.
Split into simpler sentences: On the positive side, the Far East Command initiated a program of reclaiming and refurbishing war materiel from abandoned stocks throughout the Pacific. This had not only recovered a great deal of valuable stores and equipment, it had also generated a useful repair and rebuilding industry in Japan.