TACSOP

TACSOP is an acronym commonly used by the U.S. Military for TACtical Standard Operating Procedure. The TACSOP is essentially the "game-plan" that units follow when conducting tactical operations. Similar to sports team and "secret" plays, most units have a pre-determined default method for initiating attacks and solutions to problems that could arise.

Battle drills
The different ways to attack the enemy or possibly be attacked are called Battle Drills. The TACSOP includes plans such as
 * MEDEVAC - MEDical EVACuation
 * FRAGO - FRAGmentary Order
 * WARNO - WARNing Order
 * OPORD - OPerations ORDer

Indexing
TACSOPs are organized into the following format:
 * Annex A: Task Organization
 * Annex B: Command and Control
 * Annex C: Operations
 * Annex D: NBC
 * Annex E: Air Defense Artillery
 * Annex F: Fire Support
 * Annex G: Fire Control and Distribution
 * Annex H: Operational Security
 * Annex I: Combat Service Support
 * Annex J: Signal
 * Annex K: Intelligence
 * Annex L: Safety
 * Annex L: LDP