The EIB and the CAB are both group one badges. Per AR670-1 you may only where one badge from group one at a time.
Yes, you can wear a Combat Action Badge (CAB) and an Expert Infantryman Badge (EIB) on your Class A uniform. The regulations regarding the wear of these badges can be found in AR 670-1, paragraph 22-16 and 22-17.
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.
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.
No.
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.
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.
No. The only time this is done is a matter of local policy, where the unit might dictate that those who were awarded the EIB previously (and thus aren't testing for it) wear it during the period in which EIB testing is taking place.
The Marine Corps doesn't have an award which is equivalent to the Army's EIB. You'd have to hold an 11 or 18 series MOS while serving in the Army and pass the EIB testing in order to be eligible to wear it.
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.
Yes, a non-infantry officer serving in an 11A slot, which is typically an infantry officer position, can wear the Expert Infantryman Badge (EIB) if they meet the required criteria and successfully complete the EIB testing. The EIB is open to personnel across various Army branches and is based on individual performance, not specific occupational specialties or positions.
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.
It's a class 1 badge, so it's the same as the EIB, CIB, EFMB, and CFMB. So, that's 1/4" above ribbons or if he has wings, it's a 1/2" above those. If he has room on the pocket, the wings go there first. that should give you enough room for the CAB to fit below the lapel. But, if he has so many medals that it's still covered, you can align the ribbons to the wearers left (like a staircase) and fit the CAB on top, under the epepauletjust make sure the side of the CAB is aligned with the side of the ribbons. see this guy's picture: