Great Archives (Ground equipment of Earth)
Ground Vehicles :
Type-6 Mirage Energy Tank :
The UEAG-HEWAV-T6 (Unified European Armored Group - High Energy Weapon Armored Vehicle - Type 6) Mirage tank is a fragile, but speedy and extremely mobile grav-tank built by the Unified European Armored Group (UEAG) for the European Federation Marine Corps in response to the use of laser equipped battle tank by the Pan-Asian Confederacy Interplanetary Army Corps during the Interplanetary Wars. An upgraded version of it was still in service as the primary support tank for the EFMC when Alexandra disappeared.
In peace time the Mirage used to be mocked by the UIS as a glorified glass cannon, fit only to put the scares into colonists and rebels, notably due to the relatively poor performance of the Pan-Asian Confederacy vehicles against UIS power armor equipped infantry, notably their integrated short range anti tank missiles. That opinion abruptly ceased after they were deployed as part of the Alpha Centauri relief force. The reason why is simple : the Mirage mounts a 50 megawatts fusion-pumped laser, which essentially does the equivalent to detonating 10 kilograms of tnt on target, every second. It doesn't just destroy tanks or cover, it is more or less a self propelled, continuous artillery barrage, and can literally dig out reinforced neoconcrete bunkers in a matter of seconds and even punch through starship grade armor if given enough time. Coupled with Dalmatian drones for anti-sniper support, and a vehicle mounted point defence array, these tanks' weaknesses are almost completely canceled, thus forming a mirage battle group.
So yes, the mirage might be easy to kill, but Gods help you if you stay in it's line of sight for more than 3 seconds.
One of it's variants was noted for carrying a vast array of smart armor piercing cluster missiles (missiles releasing self guided sub munitions) to counter UIS power armored infantry rushes, which were the only viable tactic to take out a mirage battle group without orbital bombardment or the use of nuclear weapons. Although the UIS found a counter eventually, thousands of UIS marines were killed trying to reproduce the wrong tactics against mirage battle groups using this variant.
Infantry Weapons :
FT-RG-T96-MP "Shell-breaker" :
The Federation Technologies, Rail Gun, Type 96, Man Portable (FT-RG-T96-MP), or mostly known as the T96 "Shell-breaker", was the mainstay of the European Federation's military anti-tank, and later anti-power armor weapons for several decades, until its replacement by the AGA-RGMT-103 (Arcadia Ground Armaments-Rail Gun Model T-103), following the buyout and incorporation of Federation Technologies into Arcadia Systems.
The T96 is especially famous for it's service during the Alpha Centauri Campaign, where it served as the only infantry portable weapon available to the European Federation's various ground forces capable of piercing UIS Marine Corps powered battle armor and have a high enough rate of fire to be useful against an infantry attack. As such, it retains a place in the pantheon of legendary European weapons. Its reliability, damage potential, and insane range and precision has earned it respect from the UIS to the Pan-Asian Confederacy.
While the weapon itself has gone out of service in the European Federation's various military branches, it is still used in various law enforcement roles, particularly for heavy duty anti-piracy missions on EuroFed colonies. They are also installed as anti-vehicle weapons on a variety of ocean going or grav-capable crafts for customs and coast guard purposes on Earth. It is incredible how a slug of tungsten capable of piercing military grade armor plating passing at hypersonic speeds in front of your vehicle can convince people to stop and surrender.
As for outside the European Federation, the T96 is still used by various polities around human space. It has progressively gone into reserve stockpiles, mainly due to the advancement in technology and the lessening of ground engagements throughout human space. The only government that still uses it as a mainstay weapon is the Outer System Republic, who has improved upon the design, creating a licensed variant known as the T96C. Still, there are hundreds of thousands of T96s stockpiled in mobilization camps and army reserves throughout human space, some even in nations overtly hostile to the European Federation.
AGA-PGT3 Plasma Gun :
The AGA-PG-T3 (Arcadia Ground Armaments - Plasma Gun Model 3), nicknamed the 'Annihilator', was one of the most advanced infantry weapons ever developed by any nation in human space. The weapon in essence is a railgun, with the notable difference that instead of firing a slug at supersonic velocities, it fires a packet of superheated plasma.
The weapon was used extensively during various engagements between the EFMC and UISMC in Alpha Centauri, and shined as the most effective anti tank weapon in the Federation's arsenal. However it suffers from a multitude of issues, which have prevented it from supplanting railguns as the EFMC's mainstay anti-tank weapon.
First and foremost, the Annihilators are expensive, so much so that they are often more valuable than tanks. They are also maintenance heavy and notoriously finnicky and unreliable if used in poor conditions. While the gun itself is unlikely to fully malfunction or harm its user, its projectile might be detrimentally affected in terms of accuracy or power.
Last but not the least the Annihilators are complex and high tech enough that spare parts can only be produced by the most advanced of fabricators, such as those found on Dawnstar-class super-battleships. Since those fabricators are always in high demand for considerably more important parts, the Annihilators have become famous for just being shipped back to Earth on the next supply run when a key component breaks down, as while fixing it in another star system is theoretically possible, in practice it will very rarely happen.
Only the European Federation possess this weapon, thanks to an exclusivity contract with Arcadia Systems, but it is worth noting that the base technology for man portable plasma gun has been licensed to Federation allies, notably the Ottoman Directorate, who has begun producing their own infantry plasma weapons, albeit far less advanced than the ones currently fielded by Federation forces.