Since your brother was in the Marine Corps such a short time (two months), would it be better to make him a different quilt as a "just because" gift? And do something else with the Marine Corps quilt? Quilts of Valor is a great option.

I tend to agree with HillCountryGal. Hopefully he will find a new interest and can move on quickly.

The Marine"s have a saying "Once a Marine always a Marine" Please give this Quilt to him.

Oh yeah, make it disappear!!

My thoughts!

The saying is for those who graduate. They must pass the Crucible before they are called Marines.

Great idea.

Finish it and see if Quilts of Valor or another service org would like it. This would hurt too much for him to be reminded of what he was deprived of...and some other person who was a Marine may have no one to make them a quilt and be tickled silly.
Start another quilt for your brother.

Wait awhile, when you think he is able to discuss it with you, ask if he would like it for himself or one of his boot camp friends. If he does not want it for himself or a Marine friend, ask about Quilts of Valor as a gift from you and him together. If he likes this idea, be sure to put his name on the label with your and find a Marine or Marine veteran to present it to. Also remind him, once a Marine always a Marine.

If he had no clue about it I wouldn't bring it up. Maybe do something else for him a different design. Depending on how far you are with the quilt, you could always donate it to the wounded warriors or the local marine armory as a wall hanging.