No. Only one Category 1 badge may be worn.
NO. Army Regulation 670-1 specifies that only one badge from group one can be worn at a time. Group one consists of the EIB, CIB and CAB. Combat badges take precedence over skill badges. A soldier having earned both the EIB and CIB must wear the CIB. A soldier having earned both the CIB and CAB may choose which one to wear.
You can only wear one at a time - they can't be worn together. With or without a CIB, the only way you'd be authorised to wear the EIB is if you've tested for and were awarded it. If you havn't done this, you can't wear the EIB, even if you have a CIB.
Yes. The CAB (along with the CIB and EIB) is a Category 1 badge, of which only one may be worn. The CMB is a Category 2 badge, and can be worn along with a Category 1 badge.
Yes. The CIB and CAB are Category 1 badges - nothing is worn above them.
Yes, in the same sense that a CIB or CMB is.
Technically, you have your own discretion to wear whichever one you choose. However, if you've been awarded a CIB, and choose instead to wear an EIB you've earned, you can expect your chain of command to not be particularly thrilled about it.
No the CIB is a an Army award and not transferrable to the Marine Core dress uniform.
The CAB and CIB are class one badges and are of higher precedence than any other badges.
The Combat Infantryman Badge (CIB) is awarded to infantry personnel who have actively engaged in ground combat. It does not require expertise in marksmanship. Therefore, if you meet the qualification criteria for the CIB as an infantry soldier, you can wear the badge regardless of your marksmanship skills.
No. They would receive a Combat Action Ribbon. If ever they transferred to the Army, then they'd be eligible to wear the CIB or CAB in lieu of their Combat Action Ribbon.
The EIB and the CIB are both military designations. When they have been earned, they can be worn. There is a limitation to the number of medals or ribbons that can be worn on a uniform.
No. CAB is one of only three Category 1 badges (EIB and CIB are the other two). Being a higher category badge than any others, they are always worn above any other badges.