Wow. Squad Combat. I say Ike Squad Vs. Marth Squad- no special names.
I say each squad of eight people of equal skill:
Ike Marth
Abel Oscar
Titania Jeigan
Gatrie Draug
Shinon Jeorge
Boyd Cain
Mia Ogma
Rolf Gordin
This seems right. Objections? No? Goody then. Since this is likely going to be one of the more longer ones, I'll get right into analyzing Matchup 1, from bottom to top.
ROLF VS. GORDIN:
Rolf is an archer taught by the expert sniper Shinon, also a part of the team. As such, he is very skilled in archery. However, he is still a child, and thus, is likely outsmarted or easily overpowered.
Gordin is a member of Altea who, unlike Rolf, is much more armored as seen here:
However, and quoting from FEWiki:
"A shooter that frequently fails his shots, but over time, becomes very strong." He is also said to train under Jeorge, also like Rolf.
While the two both have skill wielding a bow, Rolf clearly has a lead due to Gordin's apparent inaccuracy. Over time, he gets better, but time isn't of the essence when you have eight people going for you.
ADVANTAGE FOR ARCHER: IKE
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MIA Vs. OGMA:
Mia is a ditzy yet upbeat sword fighter with unparalleled speed and skill. She has a "highly aggressive style", and has learned some skills from Ike. She also hates a foe who holds back on her simply because she is a woman.
Ogma is a serious mercenary character with much more Strength and experience than Mia, though the latter can be argued against. And depending on which Ogma we are discussing, then he is also more armored than Mia. This is a mixed blessing: while this makes him nigh-impenetrable by Mia's thinner swords, this also makes him slower: although Mia has a highly aggressive style and with higher speed, will likely run around Ogma.
The question is can she kill him before HE does? Since Ogma is no slowpoke himself, as proven when he single-handedly defends two children from vikings with the help of a mystery man. Mia almost always has others watching her back, but on her own, she may easily be overwhelmed.
ADVANTAGE IN AMBUSHER: MARTH
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BOYD VS. CAIN
Boyd is a loud, reckless, and overconfident axe-user with tremendous strength and, in-game, HP, which can be translated as Willpower, in a way. To even up Cain's advantage with a horse, we'll give Boyd a Poleaxe to even the odds.
Cain is an incredibly loyal knight of Altea and is an adept wielder of spears and swords, with the latter being his better wield. He is also on horseback, which gives him a tremendous mobility advantage. He's got a huge advantage over Boyd normally, but with the Poleaxe, Cain cannot risk getting too close or he (Or his mount.) will be cut in two, due to Boyd's huge strength.
The question is whether or not Boyd can kill Cain while he is still on his horse. Since Cain wears armor, the blow Boyd may give will not always be a clean one. It may simply knock him off the horse, with the velocity crippling him anyway. But if Cain manages to survive, he instantly has the advantage. Why?
In the FE Universe, a weapon triangle exists: Swords beat Axes, Axes beat Lances, Lances beat Swords. Makes sense, I suppose. anyway, sword users are commonly known as being, well, fast. Cain unmounted can run circles around the un-armored and lumbering Boyd, and strike when he is open.
ADVANTAGE OF SHOCK TROOPER: DRAW- Between Boyd's Poleaxe and Cain's unmounted speed.
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There's also a matter of what weapons we're giving these guys.