*SPOILERS*
Yes he does, but a scene later he kills himself trying to find the cure for the lambent.
I believe it was because he disobeyed an order and returned to his estate to save his father.
no he didn't the grubs are keeping him hostage.
Marcus is presumably 35 years old, because he fought in emergence day for 10 years and was 21 at emergence day, and stayed in Jacinto prison for 4 years for abandoning his post to save his father, so he is 35 in Gears 1.
Marcus fenix
He disobeyed some orders. I am not sure what they were. I think he was trying to save a fellow soldier or something. Not really sure.
griffin and marcus
He dies at the end of act 3. He blows himself up with a gas truck to save marcus, anya and sam
It's Marcus dad
He died cause of the loucoust
i dont think so but he likes her and in gears of war 3 they mite fall in love
Yes i do because Marcus dies in gears of war 3 and i think Barid does as well.
He's in prison for dereliction of duty. http://gearsofwar.wikia.com/wiki/Marcus