Sentence:  He was perhaps a trifle tipsy , having been long at sea where drinking is not permitted , and consequently out of practice ; he wore a brown tweed sports jacket obviously tailored in Hong Kong , and he was of an age that <WSD>marked</WSD> him as a lieutenant . 
Meaning of the word marked with <WSD> tags:  be a distinctive feature, attribute, or trait; sometimes in a very positive sense