text: Chapter 1
  1-49. Additionally, individual and unit maintenance tasks represent important training opportunities that
  leaders must exploit. Disciplined units conduct disciplined maintenance to Army standards in garrison,
  during training, and when deployed. Training to maintain also means leaders train subordinates to be good
  stewards of Army resources. Building a sense of stewardship and frugality conditions leaders and units to
  operate more effectively in austere operational conditions.
  TRAIN AS A COMBINED ARMS TEAM
  1-50. The Army fights and trains as a combined arms team by training tasks and weapons by associated
  warfighting function and functional units. Fire supporters and FA also train using multi-echelon training
  techniques capitalizing on the inherent relationships among higher, lower, and adjacent units that habitually
  operate together.
  1-51. Commanders must create and integrate realistic training environments. This is accomplished by
  replicating the complexities of the expected OE, including electronic warfare (EW), denied, degraded, or
  disrupted space operational environment (D3SOE) across their formations, in addition to operations in a
  CBRN OE.
  TRAIN TO STANDARD USING APPROPRIATE DOCTRINE
  1-52. Commanders train both the FS and FA components of the FS system within their formations to ensure
  readiness. They consider their supported commanders' strategy for training the entire combined arms team.
  They rely on their firm grasp of FA and FS doctrine and TTP, tempered by their experience and military
  skills when developing training plans.
  1-53. The responsibility for training includes the authority to determine the frequencies of the certification
  and qualification tables described in TC 3-09.8. Critical in determining these frequencies is a dialogue
  between FA commanders and their supported commanders.
  TRAIN AS YOU FIGHT
  1-54. Commanders must incorporate digital sustainment in their unit training plans. Digital sustainment
  training must be conducted with attention to detail and adherence to time standards. Digital tasks and
  troubleshooting procedures are perishable skills that need to be reinforced on a regular basis. Focus of this
  training must be at the end user level of the FS and FA C2 systems.
  1-55. Whenever possible, incorporate multinational partner personnel and units during training events to
  increase interoperability and shared understanding of capabilities and limitations of FS systems.
  Multinational operations is a collective term to describe military actions conducted by forces of two or more
  nations, usually undertaken within the structure of a coalition or alliance (JP 3-16).
  1-56. All efforts must be expended to conduct this training in a field environment or over distances to
  replicate a field environment. The speed, accuracy, and responsiveness of fires in support of a commander's
  concept of operations depends on the proficiency with which firing units and TA capabilities utilize when
  communicating with digital systems.
  SUSTAIN LEVELS OF TRAINING PROFICIENCY OVER TIME
  1-57. Once the unit achieves required task and weapon proficiencies it strives to maintain these proficiencies
  within the band of excellence. Many factors affect FS and FA training proficiency such as personnel
  turbulence, skill atrophy, and maintenance of equipment, physical fitness, and new equipment fielding and
  training. Successful commanders understand these factors and ensure that the training proficiencies attained
  do not degrade to a less than acceptable level.
  1-58. To overcome the anticipated highs and lows of training proficiency, commanders continually re-
  evaluate training plans, current proficiencies, and strategies. Sustaining high levels of proficiency sometimes
  proves more difficult than developing proficiency from a starting point.