I notice when you injure or kill an opponent on the Strategic Scanner Game Log it tells you the unit's number, but when you first spot an enemy the unit number is not mentioned. It's probably supposed to be there and has maybe just been missed off, but I think it would be useful if it was displayed there too.
eg.
"Unit Ratface Flanigan (tstamper's side) has been spotted!"
"Ratface Flanigan (tstamper's side no. 2) has been wounded 98 by an explosion!"
"Ratface Flanigan (tstamper's squad no. 2) has been killed!"