The War Machine armor cameoed in the 1st episode, when JARVIS offered it to Sam before he went with the Falcon suit, but that's it.I just realized something did War Machine ever appear or even get mentioned on this show?
I think Wacker said he'd show up in Avengers: Secret Wars but that never happened.
It's the oddest thing since he was probably the only major movie Avenger they never used on this show, and he didn't have rights issues like Scarlet Witch and Quicksilver did.