Complex sentence: Kitchener fought off all opposition to his plan, and all attempts to weaken or water down its potential, including a piece-meal dispersal of the regiments to reinforce the formations of the regular army or Territorial Force.
Split into simpler sentences: Kitchener fought off opposition to his plan, and attempts to weaken or water down its potential. These included a piece-meal dispersal of the regiments to reinforce the formations of the regular army or Territorial Force.