On a practical note:
A battalion of Marines on the pattern of
Spinward Marches Campaign is 506 officers and men, 44 12-person APCs, 13 tanks, 4 artillery APCs mounting MRLs, 4 artillery APCs mounting drone missile launchers. Now, that's off to begin with because there's no maintenance or support; we'll come to that.
Each vehicle requires 5 maintenance points plus another 20 for weapons plus 90ish for electronics; there's a lot of standard stuff on the Marine APC and I tend to assume each soldier carries a commo unit and at least one night-vision device. The battalion's vehicles draw around 7500 maintenance points: 150 men plus equipment and vehicles to transport them. The battalion needs a maintenance company, but we'll assume they accidentally got left off the chart.
Adding battledress to each of the 10 infantrymen in the APC means an additional 30 maintenance points per APC, increases maintenance load battalion wide, means another 27 maintenance workers for the battalion. The chief gain for that is that each man can carry more - not a big bonus when they're APC-mounted - can carry a shoulder-cannon instead of a laser that punches infantry armor almost as well, and can lift boulders. For me, combat-armored laser rifles with a battle-dressed FGMP in squad support is just as effective and means fewer men sitting back at HQ instead of up on the front lines.
And then there's cost: the Striker APC's running 5.6 million with all those lovely extras. 10 men in battledress with FGMPs is MCr1.05 each, versus 96 thousand credits for the combat armor and laser rifle. In other words, I can buy almost two and a half APCs with combat-armored laser-rifles for the price of one with battle-dressed FGMPs, and the chief disadvantage of the men with lasers is they can't toss around boulders. The combat armor serves fine for personal protection in hostile atmospheres (53.C.3.a); they can't stay inside a burning building, but that's not a serious handicap.
(Me, I'm a big fan of chameleoned combat environment suits and gauss rifles with RAM rifle grenades for the regular army joes, but they don't have to serve on ships that could lose their atmosphere.)
The guy in the fancy suit drops quite nicely if you hit him with a RAM grenade; a TL13 laser offers a bit under a 1/3 chance of a light wound versus his certain-kill shot, but that's not much of an edge for a trooper that costs 10 times as much as the other guy - a light wound will stop a Striker regular from advancing even if it doesn't take him out of the fight. The guy really needs to be veteran or elite to take full advantage of that edge and, even then, cost-benefit still favors fielding more combat-dressed troopers over fewer battle-dressed troopers. His chief advantage is the ability to defeat bunkers and light armor: you need 20 inches of reinforced concrete before it even starts doing you any good, twice that thickness if you want a reasonable chance of stopping the blasts, but one guy in the squad is enough for that advantage to pay off. Mercenary and MT aren't any better: the fancy suits and big guns are nice for special ops but they don't bring enough to justify the cost on a battalion-wide basis. GURPS I think is different, but I don't know it real well.
Battledress and FGMP is fine for an elite small-unit operation and in the squad support role, but it's impractical for a battalion-size unit. Meaning no disrespect, but I think folk got charmed by the dramatic appeal and didn't give it a critical look.
I explain that by saying that the
Luuru is a Duchy of Regina Navy vessel with DoR Marine Corps marines aboard.
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...
Makes them members of the 4518th, no? Duke's own Huscarles!