(As usual) ... I understood the original CT write up in LBB A1 differently.
Yes, there are 3 different squads who are all specialized for different tasks (hostile boarding, mechanized infantry, orbital drops) ... but they're ALL MARINES. That means that the 3 squads can "do" each of those tasking assignments, but there's 1 specialist squad for each of them that is "better" at that role (because they train more intensively for it) than their shipboard peers.
I base that interpretation on the notion of the United States Marine Corps (USMC) that EVERYONE is a rifleman, first and foremost. Therefore, EVERYONE spends time as a "grunt with a gun in a trench" before moving on to their various specialties. Even the marine aviators spend time as infantry first, living in like riflemen, before moving on to flight school for the aircraft they're going to be specializing in.
So it's a bit of an error of the first order to think that marines specialized for a particular role (hostile boarding, mechanized infantry, orbital drops) are completely "incapable" of performing the roles other than their specialty. The marines can do all three roles just fine ... they're "qualified" to perform any of those tasking assignments. However, there are specialist squads who perform each role at "expert" level, rather than just qualified.
So if you've got a hostile boarding action (for example) ... you send in the squad that specializes in that role as the vanguard, but if they need reinforcement(s) then either of the other two squads will be capable of providing that extra "qualified to do the job" manpower (they just won't be as specialized in terms of skills).
The mistake to make here is the idea that the specialization of roles is so complete as to EXCLUDE being able to perform other roles. Just because your squad specializes in mechanized maneuver doesn't mean that you completely "forget" what to do during a boarding operation or an orbital drop by capsule. Instead, you've got 3 squads of "grunts" and each squad has specialists in it for each of the 3 roles, divided up by squad. It's a little bit like have a squad of instructors/experts in each role, who can then share their training/expertise/experience with the other squads who specialize in different tactical contexts. That way, you've always got "3 squads of marines" at your disposal AND 1 of those squads is always a specialist in whatever you need doing (so they take point on whatever the mission is).
It's actually a reasonably elegant solution to the question of how to organize a small detachment of marines aboard ship who can provide "infantry support" regardless of the situational context. You just need to recognize what you're looking at.
Then LBB4 came along afterwards and made the "35 personnel shipboard" a non-standard configuration for the organization of personnel. Also doesn't help that the LBB A1 Pinnace is 35 tons instead of the "standard" 40 tons for a (stock) Pinnace, so there's all kinds of weirdness going on with respect to the small craft+vehicle complement.
- 1x Small Craft
- 1x GCarrier
- 1x Air/Raft
- Drop Capsule Launchers
This is a remarkably versatile set of capabilities for a starship, with regards to the deployment of marines, who can be given a remarkably wide variety of assignments and mission tasking. Infantry are capable of doing things that starship weapons cannot.
Destroy? Starship weapon works just fine.
Capture? You're probably going to want infantry.
Hold? DEFINITELY going to need infantry.