Rifle Team: 3 riflemen (privates) and one team leader (sargeant) - all armed with ACRs; one of the riflemen also has an underbarrel RAM grenade launcher.
Machinegun Team: 1 machinegunner (lance corporal, armed with Advanced LMG), 2 assistant machinegunners (privates, armed with ACRs), 1 team leader (corporal, armed with ACR).
Rocket Team: 1 rocket gunner (lance corporal, armed with anti-vehicle rocket launcher), 2 assistant gunners (corporals, armed with ACRs) 1 team leader (corporal, armed with ACR).
APC: a TL10 light wheeled APC (equipped with Advanced MMG) crewed by a driver (corporal, armed with ACR) and gunner (lance corporal, armed with ACR)
Squad: 1 Rifle Team + 1 Machinegun Team + 1 APC. The Rifle Team's leader is also the squad's leader. 10 soldiers and one APC total.
Platoon: 4 Squads + a Command Team composed of a CO (lieutenant), a senior NCO (gunnery sergeant), a medic (lance corporal) and a comm/intel specialist (lance corporal) all armed with ACRs + a command APC (with its own driver and gunner). 46 soldiers and 5 APCs total. The Machinegun Team in one of the Squads is replaced with a Rocket Team.
Body armor is TL8 flack jackets for atmospheric ops or TL9 HEV suits for vacuum ops. Everyone also carries combat knives that could be attached to the rifles as bayonets.
In space ops, the APCs are left in their garages and their crews become small fireteams; the ACRs are replaced with accelerator rifles.
Landing is conducted by the small craft of your choice; you could probably load the whole platoon and vehicles into one large dropship.
If you want MGT stats for the Advanced LMG, Advanced MMG and APC I could make them up and post them too.