Final answer:
In the United States military crisis action planning process, the Warning Order (WARNORD) is the order that does not establish a tentative C-day and L-hour, as it is intended for the initiation of planning without setting specific timelines for the commencement of operations.
Step-by-step explanation:
The crisis action planning process within the United States military includes different orders issued for the preparation and execution of military operations. One specific order that does not establish a tentative C-day and L-hour is the Warning Order (WARNORD). A WARNORD is typically the first in a series of orders and is used to initiate the planning process when a situation might require military action. This order is intended to provide initial planning guidance and initiate necessary action in anticipation of forthcoming operations. Unlike the Alert Order (ALERTORD), Planning Order (PLANORD), or Operations Order (OPORD), the Warning Order does not set a specific timeline for the commencement of operations, as these temporal details are generally specified in later orders once the situation becomes clearer.