if EVERYTHING needs to be covered, its impossible to answer..
if you know there may be heavy terrain effects, of course the appropriate load outs.
scenarios may also call for special composition
but apart from this, i think several meat-shilds and as many MHMG as possible. alternatively RL, but not to many, as they tend to be very costly and inflate your elite-squads (or cost you the other specs avalible. i like grenades/GL even more than RL)
grunt RL are a waste of time, imho..
i would also say not to many elite troops, just 1 of the best.
these guys are so expensive (and mostly die as fast as the grunts) that you should not risk fielding a small army..
=> meat shilds, behind some heavy hitters, be it HMG heros, vehicles or things like the (squad)scorpion.
i feel that if you can put of the "you wasted my shilds but now stand in the open and die" game
or the
"you stand back, but your lousy 6-8 wait actions (3-4 shots, ~2 hits) are not enough to stop my swarm+annihilation behind the swarm" game
you are generally in a good position.
of course, this is a very general tactic, but without any further information about the circumstances, thatīs the best i have to offer
my 750 P capitol proposal (again i say, 2 grunts / support is to restrictive, it should be 2 units..)
Unnamed750 Pts - Capitol: Navy Army
1 Major Maria Del Torres @ 42 Pts
Laser Sight
1 Blood and Guts Lt. Colonel @ 48 Pts
4 Assault Marines @ 166 Pts
1 Assault Marine Sgt. @ [29] Pts
1 Assault Marine Grenadier @ [33] Pts
5 Heavy Infantry @ 154 Pts
1 Heavy Infantry Sgt. @ [24] Pts
1 Heavy Infantry Sniper @ [35] Pts
5 Heavy Infantry @ 154 Pts
1 Heavy Infantry Sgt. @ [24] Pts
1 Heavy Infantry Sniper @ [35] Pts
2 Orca MK III @ 182 Pts
2 Orca Heavy Infantry HMG @ [54] Pts
Total Army Cost: 746