This has probably been speculated about before, but I’m willing to bet that the character B J Britt is potentially playing in Age of Ultron won’t be Tripp, but his Howling Commando ancestor.
(since a. we already know there‘s a flashback set in the WW2 era, and b. we’ve never heard who Tripp’s ancestor is, he could be a Commando we’ve never met before)