I think the although the task for both the lost soldier and the lost survivor is to get back to civiliation and be saved, as you rightly pointed out, the soldier has the enemy to contend with. Hence the need to evade and escape.
The situation for the other is slightly different in that the survivor may be a lost hiker / archeologist etc in the wilderness. That's where the kit becomes useful in helping to keep the guy/gal alive & warm till he is found.
If you have the skill and the inclination you may want to try and find your way out on your own, but with the advent of cellular phones / gps and personal locator beacons, sitting and hugging a tree may be better to allow the SAR teams to try and locate you

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Trusbx