What's the adjective for GIing? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verb GI which may be used as adjectives within certain contexts.
GI
(military) Initialism of generalissue. Given to a soldier by the army (as an item), rather than brought from home; or used by the army (as a procedure), and different from its civilian counterpart.