Mr & Mrs hedghog,
I have noe been in the UK military for fifteen years, we use way points and caches all the time. I've never found a beany toy where I would be expecting ammo. But I did one navigate my self and my team in the completely the wrong grid square. Hence the need for a hand held GPS.
The only reason I purchased my etrex was for use on exercise. Stumbled accross this site quite by accident. I have to say the geocacheing is by far the best use of GPS I have had the pleasure in taking part in.
best wishes .. Drew