Final answer:
Link-up procedures in military operations are focused on instituting efficient communication through pre-arranged signs and signals to ensure operational security, which are key to coordinating actions in both large and small force engagements.
Step-by-step explanation:
The question pertains to the development of link-up procedures which is a critical component of operational security in military operations. The concept cited from your reference indicates that managing a large force involves similar principles to commanding a small one, with emphasis on efficient communication through signs and signals. Therefore, when developing link-up procedures, several elements should be addressed; this includes pre-arranged signals, means of identification, rendezvous points, communication protocols, and contingency plans. Each of these components ensures that forces can successfully and securely coordinate their actions in a larger operational context.