Complex sentence: In 1988, the Border War came to a close, which soon led to substantial cuts in the defence budget; the planned attack helicopter acquisition was cut from 36 rotorcraft to only 12, greatly effecting the economies of scale.
Split into simpler sentences: In 1988, the Border War came to a close, which soon led to substantial cuts in the defence budget. The planned attack helicopter acquisition was cut from 36 rotorcraft to only 12, greatly affecting the economies of scale.