Evasion, in military SERE, means avoiding capture with the aim of returning to friendly control. It concerns isolated personnel: individuals or groups separated from their unit or organisation and no longer under its intended control. Evasion connects avoiding detection by an adversary with preserving the ability to act and preparing to return.
Evasion and escape
In English military terminology, an isolated person who eludes capture is an evader. Escape concerns getting free after capture has already occurred. Evasion may be necessary after escape: the adversary's immediate control has ended, but the person still has to reach friendly forces through a threatened area.
Within SERE, evasion is the first E. Survival maintains physical capability during evasion; resistance addresses exploitation after capture. These tasks may follow one another or become relevant at the same time during isolation.
Movement, halts and sustainment
Route selection considers the risk of observation or capture alongside the ability to reach the destination. An easy route may be exposed to view; a more concealed route may require additional energy and water. Terrain, hostile activity, physical condition and available resources therefore jointly determine which movement supports the objective of returning.
A concealed halt is also part of evasion. It provides an opportunity to reassess the situation, check equipment, meet supply needs and conserve strength. Whether to stay or resume movement depends on the threat, the person's ability to move and recovery opportunities. Exhaustion or lack of water can limit further movement just as hostile observation can.
Contact with friendly forces
Intentions recorded in an Evasion Plan of Action help recovery forces understand the isolated person's possible actions. If contact can be established, the person supplements this preparation with current reports on location, condition and threats. Where a radio or signalling equipment is available, it can help others locate the person but also reveal their position. Its use is therefore coordinated with the designated communications procedures and the actual situation.
Personnel Recovery can provide support during evasion through communications, guidance or supplies. Before pickup, recovery forces authenticate the contact and coordinate further action. Evasion achieves its objective when the person returns to friendly control, independently or with assistance.
The article on military evasion explains how situation assessment, concealed halts and further movement work together.