2 - 29 11. Communications (frequencies, call signs, codes). 12. Emergency procedures and signals. 2-8. TASK. This is a specific, clearly defined, decisive and measurable activity/action (Figure 2-13), accomplished by a Ranger or organization, that contributes to the accomplishment of encompassing missions or other requirements. 2-9. PURPOSE. This is the desired or intended result of the tactical operation stated in terms related to the enemy or the desired situation. Purpose is the Why? of the mission statement and often follows the words “in order to.” It is the most important component of the mission statement (Figure 2-14). 2-10. OPERATION. A military action or the carrying out of a military action to gain the objectives of any battle or campaign. Figure 2-15 shows the types of operations. Figure 2-13. TASKS ACTIONS BY FRIENDLY FORCE EFFECT ON ENEMY FORCE Assault Follow and Assume Block Attack by Fire Follow and Support Canalize Breach Linkup Contain Bypass Occupy Defeat Clear Reconstitute Destroy Combat Search and Rescue Reduce Disrupt Consolidation and Reorganization Retain Fix, Interdict Control Secure Isolate Counterreconnaissance Seize Neutralize Disengagement Support by Fire Penetrate Exfiltration Suppress Turn Figure 2-14. PURPOSE Allow Cause Create Deceive Deny Divert Enable Envelop Influence Open Prevent Protect Support Surprise