Captain America has been tussling with Nightshade, werewolves, and the Yellow Claw...when Nick Fury shows up to help out:
This is the first time we've seen Fury in Cap's mag for awhile, and there is absolutely no explanation given as to why Nick Fury, Director Of S.H.I.E.L.D., is dressed like Kraven's older brother, or a bad Conan cosplayer.
But in the only other panel he appears in that issue, Nick is still rocking the look:
No explanation is ever given for Fury's odd costume. Sadly, now that Nick is chained to the moon as an ersatz Watcher, we'll probably never get to see him rock that sweet look again...sigh...
From Captain America #164 & 165 (1973)