Excerpt from the book "The Fantastic Worlds of Grenadier" by Terrrance Gunn
(click here for the first 15 pages in pdf)
A check mark next to the Starsoldiers Kit name would indicate the presence of the miniatures.
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According to Wikipedia:
Although they were primarily focused on the well-established market for historical miniatures, their early products included science fiction themed Starsoldiers (product codes #S01-19) and Space Squadrons: Stellardate 2998 (#SS01-SS19) spaceships,..
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Star Soldiers from the March 1978 Grenadier Models Catalog
According to Miniatures Workshop this line was later incorporated into the Gamma World Line.
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According to The Stuff of Legends:
By the end of 1976, Grenadier's line of 25mm miniatures consisted of the Ancients line, Starsoldiers, John Carter Warlord Of Mars (discontinued), American Civil War, and Wizzards & Warriors.
Power Armor Troops
S01 Powered Armor
Trooper
S02 Powered Armor
Trooper with Bomb Racks
S03 Recon Troopers
& Commander
Infantry, Non Hostile Environment
S04 Troopers with
Laser Rifles
S05 Grenadiers &
Rocketeers
Insurgent Infantry
S06 Insurgent
Infantry with Needle Rifle
S07 Insurgent with
Cone and Rocket Guns
S08 Insurgent Command
Group
Andromeda Aliens
S09 Photon Rifleman
S10 Andromeda
Bombardier and Rocketeers
S11 Andromeda Statsis
Fieldman and Officer
Galaxy Aliens
S12 Alien Rayrifleman
S13 Alien Rocketeer
and Grenadiers
S14 Alien Statsis
Fiddmen and Officer
Heavy Weapons
S15 Laser Cannon with
Aliens and Human Crewmen
S16 Statsis
Generators and Mortars
S17 Rocket Pods and
Mines
S18 Anti-grav Sled
with Rocket Pod
S19 Robots
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Wargamers Digest V4 N1 1976
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S01 Powered Armor Trooper
S08 Insurgent Command Group
S09 Photon Rifleman