Terran Infantry, also known as the Terran Soldier, Terran Trooper and Terran Marines are the main infantry infantry of the Terran Army and Marine Corps. They were task to fight in the Main Battleground and to protect Earth from the invading forces of the Confederacy and later the in the aftermath of Clone Wars as the Republic transitioned into Galactic Empire. These soldiers either can be conscripted, volunteered enlisted person, a non-Commissioned officer or a Commissioned Officer.

- Terran Alliance wiki

Terran Army Infantry:

US Army with many variants:

- US Army Infantryman

- US Army Ranger

- US Delta Operator

- US Airborne Paratrooper

Note: that this " LEGO " sets are came from the Chinese bootleg known as Senbo blocks.

British Army with many variants:

- UK Infantryman

- UK Paratrooper Commando

- UK SAS (Special Air Service)

Russian Ground Forces:

- Russian Guard Infantryman

- Russian Airborne Paratrooper (VDV, part of the Armed Forces and it is a seperate branch)

- Spetsnaz Operator (which includes 2nd/3rd/10th/14/16th/24th Special Purpose Brigades, 22nd Separate Guards (Elite Forces unit),  45th Special Purpose Airborne Brigade (Airborbe Spetsnaz) and SSO/Special Operations Forces)

PLA Ground Forces:

- PLA Infantryman

- PLA Sniper

- PLA Machinegunner/Support

- PLA SpecOps 

French Army: 

- French Infantryman

- French Sniper

- French Foreign Legionnaire

- French Commando

German Army (Heer):

- German Infantryman

- German Panzergrenadier

- German KSK Operator

Any NATO and Non-NATO Ally of the US, as well as Allies of both Russia and China all united as part of Terran Alliance Ground Forces.

JGSDF:

ASEAN member states (Malaysia, Indonesia, Philippines, Thailand, Singapore):

- Infantryman

- Sniper

- Machinegunner

- Anti-Armor

- Special Forces units consisting of: 21st Special Service Regiment, 10th Paratrooper Brigade (Malaysia); Kopassus (Indonesia); Scout Rangers, Special Forces Regiment-Airborne, Light Reaction Regiment (Philippines); Army Special Operations Force (Singapore); Royal Thai Army Rangers, Task Force 90 (Thailand)

Terran Marine Infantry:

United States Marine Corps:

- USMC Rifleman

- USMC LMG Gunner

- USMC Scout Sniper

- USMC Raider (Special Forces)

Note: These LEGO sets came from the DeCool bootleg.

PLA Marine Corps: 

- PLA Marine Infantryman

- PLA Marine Sniper

- PLA Marine Machinegun trooper

- PLA Marine Commandos

PS: It doesen't make sense why LEGO can't make Military figures yet they have Star Wars, Ninjago, DC Comics, Marvel Comics and Pirates of the Carribean. But luckily LEGO bootleg has many to offer anyways.