1. I was under the impression that the forces they sent were basically volunteers, who were going not to fight Sauron and the orcs, but to facilitate the uniting of the people of the Southlands so that they could fight for themselves.
I also remember them saying they were sending 500 men, but I don’t recall if that was before or after their ship got sabotaged.
Either way, I don’t think it’s supposed to be an actual “fighting force,” but instead a group on a very specific mission.
I dunno. I thought it was supposed to be an "army," not "CIA Advisors," ya know?
2. I was a bit annoyed by that. They showed up exactly when the plot needed them to!
It's not just that they show up when the plot needs them to. It's that they trivialize the geography of the world. Numenor is some 1800 miles off the coast of Middle Earth, yeah? So how fast did they sail to get there? They showed that they'd have to go up-river to the mountains, but then did
not show how they'd get
thru or over the mountains. And then apparently they ride all the way across the vale of what will become Gorgoroth at a full gallop, fully armed and armored -- horses, too -- to arrive in, like, an afternoon?
Their answer to this: implied magical horses. They don't say anything about how fleet of foot they are, but they suggest that the horses are simply very special and unusual and I guess we're supposed to make the leap that they can also travel at somewhere in the neighborhood of just below Mach I.
Like, I get it, it's a world of ancient magic. Maybe the Valar sent a favorable wind to speed the Numenorian ships to Middle Earth. Maybe they're of a partially Elvish design that allows them to sail at 7x the speed of a normal ship. Maybe the horses can teleport because they're My Little Blink Ponies.
But the way the show is laying things out, you have the Numenorian fleet set out the night the refugees get to the big fort, then they're on the water for another night as the refugees retreat to the village and defend it, and then the cavalry shows up the very next morning just when it looks like Ms. Prettyface and her maybe-evil kiddo are about to be slaughtered.
I get that we're used to the tropes of the cavalry arriving just in the nick of time. I get that some of this is meant to juxtapose for dramatic/thematic purpose what the characters are doing in preparation for what turned out to be a fairly middling fight with a few cool moments. But it completely took me out of the show when this happened, and reminded me of some of the worst elements of the worst portions of Game of Thrones and that is
not something you want associated with your big-budget fantasy mega-adventure show.