Well the army has undergone a decent improvement today. two additional four-man squads of infantry have been added, as well as eight additional specialist troops, bringing the minifig count to around 41. Also, a few new vehicles have been added which is also fun. Here's what's new so far.
The Assassin (i.e. Space Ninjas) is employed in stealth-essential environments where a Sniper wouldn't be of enough use... or when gory melee is preferred over precision kills from afar.
Commandos are bionically enhanced supersoldiers capable of toting around heavier armaments, such as heavy bolters (thanks for the idea Natalya). Their standard assault weapon is the War Rifle, being held by the Sergeant in the blue helmet. They're somewhat awkward to pose because of the leg armor but oh well.
Phobian Pyros are so called their intense case of pyromania, which gives them pure bliss when immolating enemy soldiers. In the absence of nearby enemies, a Phobian Pyro may just burn the nearest structure or friendly unit if they can't handle the stress of not burninating things.
Gunners are soldiers who specialize in the use of heavy weaponry, namely machine guns like the one this guy is holding. Their movement is penalized for their heavy kit.
This squad of Jump Troopers led by Sergeant Smiley has no bonuses except for movement, which, having jetpacks, also allows them to move upwards. Their jetpacks can be counted as a weak spot if specifically targeted.
A typical gun emplacement shielded by an ORANGE TRANSPARENT BARRICADE
The Hornet attack bike. It doesn't really have weapons (will add those soon), but whoever is driving can pilot with one hand and shoot with the other if his weapon is light enough.
The Lancer is so called due to its lances on either side. They can be used as CC weapons during charges.
This open-topped cargo/troop transport, the Manta, is capable of transporting up to five or six soldiers in addition to the pilot. Seen here is a group of troops and Sgt Topper being toted around by their cross-eyed pilot. It has two laser guns on the top (treated as size 1" weapons) and a cannon underneath.
The Stalker is an autonomous unit, like the Olympian. It's roughly 1.5 times larger than the average minifig and has a heavy laser cannon as it's weapon.
My last addition for now is the Strider. Its wheels are reminiscent of a drag racer, and its armaments include a Proton Launcher of Death and a separate gunner seat in the rear. Seen driving the Strider is General Adrian, who fancies Things of Death mounted on his vehicles.