Gadget made by US soldiers and army medic (5)
I believe the answer is:
gismo
'gadget' is the definition.
(I know that gadget can be written as gismo)
'us soldiers and army medic' is the wordplay.
I cannot really see how this works, but
'soldiers' could be 'gis' (GI is an informal term for a US soldier) and 'gis' is present in the answer.
'medic' could be 'mo' (medical officer) and 'mo' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'made by' acts as a link.
Can you help me to learn more?
(Other definitions for gismo that I've seen before include "Ingenious gadget" , "Thingumajig - gadget" , "Gadget (colloq.)" , "Doofer" , "Device of American" .)