posted on Jun, 21 2009 @ 04:28 PM
Being in 'intelligence' is a fairly broad category. It could be anything from prisoner interrogation, through signals monitoring, photographic
recon to even passing down the weather reports.
In Intel, one will generally have a security clearance. In the UK, the Official Secrets Act would govern that. Most people who have access to
classified information are usually pretty good at keeping their mouths shut. That is part of your job, and a point of personal honor. Further,
jawing about classified information can lead to criminal charges.
You say that your grandfather was a sergeant. A sergeant is a non-commissioned officer. An NCO typically takes the order from an officer and gets it
done, either by leading other soldiers, or by using his specific skill set. Not knowing what sort of unit he was in, it cannot be determined exactly
what he did.
Speak with other family members, look at photos and letters that he had from the time. If you can determine where he was assigned and when, you may
be able to infer. Further, other family members may have memories that may be jogged by the photos and letters.
One thing about classified information is good to keep in mind. Most of it is blindingly mundane.
Good luck with your search.